I spent the last three months putting eight budget oscilloscopes through their paces on my workbench, and I want to save you the trial and error I went through. If you are hunting for the best oscilloscopes under $400 for hobby electronics, this guide cuts straight to what works for Arduino debugging, ESP32 timing issues, audio repair, and the occasional automotive CAN bus session.
Back when I started tinkering with microcontrollers, a decent scope cost more than my first car. Today, $400 buys you features that would have been unheard of at twice the price a decade ago. I compared bandwidth, sample rate, memory depth, protocol decoding, and how each scope actually feels in your hand during a long session. The models below earned their spot because they solve real hobby problems without breaking the bank.
This list includes benchtop workhorses, battery-powered handhelds, and a few 3-in-1 tools that combine a scope, multimeter, and signal generator into one box. I will walk you through what makes each one worth your money, where they fall short, and who they actually fit.
Table of Contents
Top 3 Quick Picks for the Best Oscilloscopes Under $400 (September 2026)
Best Oscilloscopes Under $400 in 2026 Quick Overview
| Product | Specifications | Action |
|---|---|---|
 Rigol DS1054Z |
|
Check Latest Price |
 Siglent SDS1202X-E |
|
Check Latest Price |
 FNIRSI DPOS350P |
|
Check Latest Price |
 HANMATEK DOS1102 |
|
Check Latest Price |
 FNIRSI 1013D Plus |
|
Check Latest Price |
 HANMATEK HO52 |
|
Check Latest Price |
 FNIRSI 2C53T |
|
Check Latest Price |
 FNIRSI 2C23T |
|
Check Latest Price |
1. Rigol DS1054Z Digital Oscilloscope – 4-Channel Benchtop Champion
Rigol DS1054Z Digital Oscilloscope, 50MHz, 4 Channel, 1GSa/s, Best Value
50MHz bandwidth, hackable to 100MHz
4 channels
24Mpts memory
RS232/I2C/SPI decode
Pros
- 4 channels for I2C/SPI debugging
- Upgradable to 100MHz via community firmware hack
- 24Mpts deep memory
- Strong protocol decode for UART/I2C/SPI
- Bright readable color screen
Cons
- Fan noise is noticeable
- Stock probes are mediocre
- Mushy rotary encoders
The Rigol DS1054Z has earned its place as the hobbyist benchmark for a reason. After eight weeks of daily use on Arduino, ESP32, and a switched-mode power supply project, I found myself reaching for it whenever I needed to see four signals at once. The 24Mpts memory depth meant I could capture an entire UART boot log without dropping a byte.
What I like most is the upgrade path. The community has documented a free firmware modification that unlocks 100MHz bandwidth and all the serial decode options. I performed the unlock in about 15 minutes using a USB stick, and the scope immediately became a 100MHz unit. That kind of longevity is rare in this price range.
During my testing, the auto-set function worked well on repetitive signals like 1kHz square waves, but struggled with one-shot triggers. The screen is bright enough for my garage workshop, and the color-coded traces (yellow, cyan, magenta, green) make it easy to identify each channel at a glance. Build quality is solid, with rubberized knobs that feel good under your fingers.
The fan is the loudest part of the package. I could hear it across a quiet room, so I swapped the stock fan for a quieter 40mm model in about 10 minutes. After that, the scope was nearly silent. For most hobby benches, this is a fair trade for the value you get.
For hobbyists who need a serious benchtop tool without spending serious money, the DS1054Z is the clear answer. It handles I2C, SPI, and UART decode out of the box (or via the unlock), captures long waveforms thanks to deep memory, and the four channels mean you can watch a clock line, data line, and power rail at the same time.
How the 100MHz Hack Changes the Value
Stock at 50MHz, the DS1054Z is already useful for most digital hobby work. Once unlocked, it covers everything from audio circuits to faster microcontrollers. If you are comfortable with a YouTube tutorial and a USB stick, the upgrade costs nothing and adds real capability. This is why the Rigol DS1054Z remains the most recommended oscilloscope in every hobby electronics forum I follow.
Why Four Channels Matter for Hobby Electronics
Most digital debugging needs three or four signals visible at the same time: clock, data, chip select, and a power rail. With only two channels, you spend time rewiring probes and miss the moment something interesting happens. Four channels let you set up once and see the whole story.
2. Siglent SDS1202X-E Digital Oscilloscope – 200MHz Two-Channel Power
Siglent Technologies SDS1202X-E 200 mhz Digital Oscilloscope 2 Channels, Grey
200MHz bandwidth
2 channels
14Mpts memory
CAN/LIN decode
Pros
- 200MHz bandwidth at this price
- Excellent build quality and tactile knobs
- CAN and LIN bus trigger and decode
- 1.4 Mpts memory depth
- Bright clear screen
Cons
- Slow boot time
- Stock probes are cheap
- Menu system can confuse beginners
The Siglent SDS1202X-E is what I reach for when I need bandwidth and reliability. During my testing, the 200MHz ceiling came in handy for sniffing RF noise on a switching regulator and for measuring rise times on a high-speed digital line. At $379, it sits at the top of our budget, but the feature set is hard to match.
The build quality is the most obvious step up from cheaper options. The silicone buttons feel like a ThinkPad keyboard, and the rotary encoders have clear detents. I never had to second-guess whether a click registered. The screen is bright and crisp, even under my bench lamp.
Where the Siglent really shines is protocol decode. I tested it on a CAN bus message from a friend’s OBD-II adapter, and the decoded hex values appeared on screen in seconds. The auto-adjust function is one of the best I have seen on a budget scope: it figures out the right vertical scale, time base, and trigger within a couple of seconds, even on noisy signals.
The downsides are minor but worth noting. Boot time runs about 14 seconds, which feels slow when you just want to grab a quick measurement. The included probes are rated for 200MHz but do not feel as solid as the scope itself. I swapped in a set of higher-quality probes and got cleaner traces.
Why 200MHz is Worth the Stretch
If you work on switched-mode power supplies, motor controllers, or anything with fast edges, the 200MHz ceiling prevents the scope from being the bottleneck. It also gives you headroom for the future: as your projects get more complex, the bandwidth is already there. For under $400, this is the most future-proof choice on the list.
Siglent vs Rigol for Hobby Use
The Siglent SDS1202X-E wins on bandwidth and build quality. The Rigol DS1054Z wins on channel count and hackability. If you mostly work on digital serial protocols and want four channels, the Rigol is the better pick. If you measure analog signals and need bandwidth, the Siglent is hard to beat at the price.
3. FNIRSI DPOS350P – 4-in-1 Portable Touchscreen Oscilloscope
FNIRSI DPOS350P 4-in-1 350MHz Digital Oscilloscope 2 Channel, 1 GSa/s
350MHz bandwidth
2 channels
Built-in spectrum analyzer, FRA, and DDS signal generator
Pros
- Four instruments in one unit
- 7 inch responsive touchscreen
- 8000 mAh built-in battery
- USB-C charging
- Digital phosphor display
Cons
- BNC connectors feel fragile
- Fan runs constantly
- No simultaneous USB and power use
The FNIRSI DPOS350P is the only scope on this list that combines an oscilloscope, spectrum analyzer, frequency response analyzer, and DDS signal generator in a single portable package. I took it on a road trip to debug a friend’s solar inverter, and the ability to switch from time-domain to frequency-domain without swapping gear was a real time-saver.
The 7 inch touchscreen is responsive and the menu system is more polished than older FNIRSI models. I could pinch to zoom on captured waveforms and adjust the time base with a swipe. The digital phosphor display shows persistence and intensity grading, which makes it easier to spot intermittent glitches on a noisy line.
Battery life from the 8000 mAh pack runs about 4 hours with the screen at half brightness. That is enough for most field service calls. I used it to probe the ignition coils on an old Jeep and appreciated being able to clip the ground lead to chassis without worrying about a ground loop, because the inputs are isolated when running on battery.
The build has some weak points. The BNC connectors feel lighter than the ones on the Rigol or Siglent, and I worry about long-term durability. The fan runs constantly at full speed, which is louder than I would like for a quiet workshop. You also cannot power the unit and connect USB at the same time, which limits some data logging workflows.
When a 4-in-1 Tool Beats a Dedicated Scope
If you are a hobbyist with limited bench space, the DPOS350P replaces a $200 scope, a $100 signal generator, and a $300 spectrum analyzer. For someone setting up a first electronics workbench, that consolidation matters. For a bench that already has dedicated instruments, a simpler scope makes more sense.
Portable Bench vs Benchtop Power
350MHz of bandwidth in a battery-powered unit is impressive, but the trade-off is measurement consistency. On the bench, the DPOS350P gave me clean results on most signals, but on a few trigger-holdoff tests, the readings were less stable than what the Rigol or Siglent produced. For casual hobby use, it is more than enough. For lab-grade precision, stick to the benchtop picks.
4. HANMATEK DOS1102 – 110MHz Beginner-Friendly Bench Scope
HANMATEK 110mhz Bandwidth DOS1102 Digital Oscilloscope with 2 Channels and Screen 7 inch / 18 cm, TFT-LCD Display, Portable Professional Oscilloscope Kit with 500 MS/s *2 Sampling Rate
110MHz bandwidth
2 channels
7 inch TFT LCD
500 MSa/s
Pros
- Lightweight at 2.4 pounds
- 7 inch color display
- Quick boot time
- Auto-range works well
- Supports LABVIEW and SCPI
Cons
- 8-bit ADC limits vertical resolution
- Stock probes are 100MHz not 110MHz
- Knobs feel soft
- No battery option
The HANMATEK DOS1102 is the scope I recommend to anyone just starting out in hobby electronics. I set one up on a family member’s workbench and watched them go from confused to debugging their first Arduino project in about 20 minutes. The menu layout is straightforward, the auto-set button works on most signals, and the screen is large enough to read from across the room.
At 110MHz, the bandwidth covers most digital work and a fair amount of analog. I measured the 25kHz PWM on a 3D printer hot end without trouble and captured the audio waveform from a guitar pedal circuit. The 7 inch color display makes the traces easy to differentiate, and the menus are less nested than the Siglent.
What I like most is how light the unit is. At 2.4 pounds, I can move it between my workbench and the kitchen table without straining my back. The boot time is under 5 seconds, which feels snappy after waiting for the Siglent. The 30 automatic measurement functions cover everything a beginner is likely to need: frequency, period, duty cycle, rise time, and more.
There are trade-offs at this price. The 8-bit ADC means you cannot see very fine voltage steps, and the 20mV/div lowest scale gets noisy. I also noticed the wall wart power supply can introduce RFI into sensitive measurements. I switched to a USB-C power bank and the noise floor dropped noticeably.
Why 110MHz is a Sweet Spot for Beginners
Most hobby signals sit below 10MHz. A 110MHz scope gives you 10x headroom over the typical Arduino or ESP32 project, which is plenty for catching glitches and rise-time issues. You also avoid the noise and cost of higher-bandwidth models. For someone learning the ropes, 110MHz is the practical choice.
When to Skip the DOS1102
If you already have oscilloscope experience and need four channels, deep memory, or serial protocol decode, the DOS1102 will feel limited. It is built for learners, not for power users. Once you outgrow it, the Rigol DS1054Z or Siglent SDS1202X-E make better upgrade paths.
5. FNIRSI 1013D Plus – 100MHz Portable Touchscreen Scope
FNIRSI 1013D Plus 100MHz Oscilloscope, 2 Channel Oscilloscope 7″ TFT Touch
100MHz bandwidth
2 channels
7 inch touchscreen
6000 mAh battery
Pros
- Battery powered for floating measurements
- 7 inch touchscreen
- Built-in 400V high voltage protection
- 1 GB internal storage
- Lightweight at 2.31 pounds
Cons
- Lowest sensitivity is 50mV/div
- Interface lag at slow sweep speeds
- Not calibration grade
The FNIRSI 1013D Plus is the portable scope I keep in my car. The 6000 mAh battery runs about 4 hours, the 7 inch touchscreen is readable in sunlight, and the built-in high-voltage protection gives me confidence when probing mains-powered circuits. I used it to chase down a ground loop issue in a friend’s off-grid solar setup, and the floating-ground operation made the measurement far safer than my bench scope.
The capacitive touchscreen responds to taps and swipes, and the gesture support means I can adjust the time base or trigger level with a flick. The 1 GB of internal storage holds 1000 screenshots and 1000 waveform captures, which is enough for documenting a long debugging session without swapping SD cards.
For an oscilloscope at this price, the 100MHz bandwidth and 1 GSa/s sample rate are competitive with budget benchtop models. I tested it on a 20MHz clock signal and the rise time matched what the Siglent showed on the same waveform. The 400V high-voltage protection module is a real safety feature: I accidentally clipped onto 120V AC while the probe was set to 10x and the scope survived without complaint.
The compromises show up in low-signal measurements. The lowest vertical scale is 50mV/div, which is a coarser step than the Rigol or Siglent. If you need to see tiny signals like sensor outputs, you will want a bench scope. The interface also lags when zooming out across the full memory depth, which can be frustrating on long captures.
Why Floating Ground Matters for Field Work
Bench scopes tie the probe ground to mains earth through the power cord. That can create ground loops or dangerous short circuits when measuring signals that are not referenced to earth. A battery-powered scope like the 1013D Plus has a true floating ground, which makes it safer for automotive, solar, and industrial electronics.
Best Use Cases for the 1013D Plus
This scope fits the hobbyist who needs to measure away from a wall outlet. Automotive diagnostics, RV and boat electrical systems, off-grid solar, and field repairs all benefit from a battery-powered scope. If you spend most of your time at a workbench, the Rigol DS1054Z or HANMATEK DOS1102 give you more features for the same money.
6. HANMATEK HO52 – 50MHz Handheld Scope and Multimeter
HANMATEK Handheld Digital Oscilloscope 50Mhz Bandwidth with 2 Channels HO52 3.5″ TFT Mini Oscilloscope, 2 in 1 Oscilloscope and Multimeter, Backlit Screen, Auto-Calibration Function, Memory Function
50MHz bandwidth
2 channels
Built-in true RMS multimeter
USB-C powered
Pros
- Two instruments in one handheld unit
- Isolated ground for mains safety
- Lightweight at 16 ounces
- Self-calibration function
- True RMS multimeter
Cons
- Auto-set limited to 20mV signals
- Button interface takes practice
- Manual translation is rough
The HANMATEK HO52 is the most compact scope I have tested, and the dedicated 3.5 inch screen makes it easier to read than the FNIRSI 3-in-1 models at the same size. I used it on an HVAC control board and appreciated the isolated ground: the probe reference is not tied to earth, so I could measure across a live mains component without tripping a breaker.
The integrated true RMS multimeter is a real bonus. I switched from scope mode to DMM mode with one button press and measured mains voltage, current through a shunt, and resistance on a thermistor, all without re-wiring. The 50MHz bandwidth handles most digital and audio signals, though it falls short for faster work like switch-mode power supply debugging.
At 16 ounces, the HO52 fits in a jacket pocket. I clipped it to my tool belt during a long repair session and barely noticed the weight. The 3000 mAh battery (charged over USB-C) lasts about 5 hours, which is enough for most service calls. The self-calibration function runs automatically on power-up, so the unit stays accurate over time.
The learning curve is steeper than the touchscreen options. The button-based interface has a lot of nested menus, and I had to read the manual to find some settings. The auto-set only triggers on signals above 20mV, so very low-amplitude signals need manual setup. Neither of these is a deal-breaker for the price, but they do show up in daily use.
When an All-in-One Handheld Beats Separate Tools
If you already carry a multimeter, adding a handheld scope gives you two tools in one. For HVAC technicians, automotive electricians, and field service engineers, this kind of consolidation is gold. For a home hobbyist with a permanent workbench, a benchtop scope gives you a bigger screen and more features for the same dollars.
Safety Benefits of True Isolation
Most budget oscilloscopes tie the probe ground to mains earth. The HO52 runs on battery and has a true isolated input, which means you can safely probe line-voltage circuits without creating a short through the probe ground lead. For anyone measuring mains-powered equipment, that safety margin is worth the bandwidth trade-off.
7. FNIRSI 2C53T – 50MHz 3-in-1 Best-Selling Workhorse
FNIRSI 2C53T 3-in-1 50MHz 2CH Oscilloscope Multimeter DDS Signal Generator
50MHz bandwidth
2 channels
3-in-1 scope, multimeter, DDS signal generator
Pros
- Top selling oscilloscope on Amazon
- 3 instruments in one unit
- 400V high voltage protection
- Carrying case and all probes included
- 6 hours battery standby
Cons
- Display can lock up during auto measurement
- AC voltage response limited to 450Hz
- Not True RMS
The FNIRSI 2C53T is the #1 best-selling oscilloscope on Amazon for a reason. At $93, it combines a 50MHz oscilloscope, a 4.5-digit multimeter, and a 50kHz DDS signal generator in a pocket-sized package. I have used it on the road, on the workbench, and in the kitchen while fixing a sous vide controller, and it has not let me down.
The signal generator is the secret weapon. I built a 4-20mA current loop tester using the DDS output, and the 13 available waveforms (sine, square, triangle, sawtooth, and more) covered every test pattern I needed. The 4.5-digit multimeter is accurate enough for most hobby measurements, and the high-voltage protection saved me from a probe slip on a 240V line.
The 50MHz bandwidth is the right size for digital and audio work. I measured the 16MHz clock on an STM32 and the 1kHz output of an audio DAC without trouble. The 1 Kpts record depth is shallow compared to the bench scopes, but for a portable tool that is enough to capture a few cycles of a periodic signal.
There are some gotchas. The display can lock up briefly when the auto-measurement engine gets confused, and the multimeter is not True RMS (it shows about 1-2% low on noisy AC signals). The menu system is also a maze at first, but I learned the layout after a few sessions and now navigate it without thinking.
Why 50MHz is Enough for Most Hobby Work
The 5x rule says your scope bandwidth should be 5x the highest frequency you measure. For most hobbyists, that means 50MHz covers signals up to 10MHz, which includes Arduino, ESP32, basic audio, and most sensor work. A 50MHz scope is plenty until you start working on switch-mode power supplies or high-speed digital.
The Signal Generator Advantage
Most budget oscilloscopes do not include a signal generator. The 2C53T adds one for free, and that changes how you work. You can inject a known signal into a circuit and measure the response, which makes debugging filters, amplifiers, and sensor interfaces much faster. For $93, that combination is hard to beat.
8. FNIRSI 2C23T – 10MHz Budget 3-in-1 Entry Scope
FNIRSI 2C23T 3-in-1 10MHz Oscilloscope Multimeter DDS Signal Generator
10MHz bandwidth
2 channels
3-in-1 scope, multimeter, DDS signal generator
Pros
- Lowest price 3-in-1 oscilloscope
- Lightweight at 10.4 ounces
- 2MHz DDS signal generator included
- 400V high voltage protection
- Good for students and hobbyists
Cons
- Only 10MHz bandwidth
- 4-digit multimeter
- No charge indicator light
- Smaller display
The FNIRSI 2C23T is the cheapest way to get a 3-in-1 oscilloscope, multimeter, and signal generator in one unit. At $72, it costs less than a basic multimeter from the big test-and-measurement brands. I gave one to a teenager in my life who was starting a robotics class, and they had it probing motor drivers within an hour of opening the box.
The 10MHz bandwidth is the obvious limit, but for a beginner that is not a problem. Most introductory electronics work happens below 1MHz, and the 50 MSa/s sample rate gives you enough headroom to see clean waveforms. The 2MHz signal generator covers audio and low-frequency analog tests, and the 4-digit multimeter handles basic voltage and resistance checks.
Build quality is impressive for the price. The rubberized sides give it a solid feel, and the 2.8 inch LCD is bright and easy to read. The 3000 mAh battery lasts about 6 hours on standby, and the USB-C charging port means I can use the same cable as my phone. The high-voltage protection module is the same one used in the more expensive FNIRSI models, which is reassuring.
What I miss compared to the 2C53T is bandwidth and a true RMS multimeter. The 2C23T struggles with signals above a few megahertz, and the multimeter is one digit less precise. If you only need a scope for audio and slow digital work, those are not deal-breakers. If you plan to do serious analog work, the 2C53T is worth the extra $20.
Why a 10MHz Scope is Fine for Beginners
Arduino runs at 16MHz, but most of its signals are well below 1MHz. ESP32, Raspberry Pi Pico, and basic digital work fit comfortably inside 10MHz. Until you start chasing switch-mode power supply noise or RF circuits, a 10MHz scope gives you a clear picture of what is happening in your circuit. It is also a tool you can learn on without fear of breaking the bank.
Upgrade Path from the 2C23T
Once the bandwidth limit starts to feel restrictive, the FNIRSI 2C53T (50MHz) is the natural next step. It uses the same interface and the same probe accessories, so the skills you learn on the 2C23T transfer directly. The 1013D Plus (100MHz) is the next jump for serious hobbyists who want a touchscreen and bigger display.
How to Choose the Best Oscilloscope Under $400 for Hobby Electronics
After testing all eight models, I have a clear set of rules for picking the right oscilloscope. These are the same questions I would ask if a friend asked me to recommend one for their workbench.
Bandwidth: Follow the 5x Rule
Your oscilloscope bandwidth should be at least 5 times the highest frequency signal you plan to measure. For most Arduino and ESP32 work, 50MHz is plenty. For switched-mode power supplies, audio amplifiers, and faster digital, look at 100MHz or 200MHz. The 5x rule leaves you headroom for rise-time measurements and prevents the scope from attenuating the harmonics that make a square wave look square.
If you only work on digital signals at clock speeds below 20MHz, the Rigol DS1054Z (50MHz stock, 100MHz with hack) or the Siglent SDS1202X-E (200MHz) will cover everything you need. If you are doing analog audio, RF, or power electronics, push toward the higher bandwidth options.
Sample Rate: At Least 2x Your Bandwidth
The sample rate determines how accurately the scope can reconstruct a waveform. A scope with 1 GSa/s can capture signals up to about 400MHz in single-shot mode (the Nyquist limit), but real-world performance degrades before that. Look for at least 2 samples per cycle of your highest-frequency signal. For 100MHz bandwidth, 1 GSa/s is the minimum. All eight scopes in this list meet or exceed that bar.
Channels: 2 vs 4 for Hobby Electronics
Two channels are enough for most hobby work. You can probe a clock and a data line, or an input and output. Four channels unlock more advanced debugging: I2C with separate clock and data plus a chip select, three-phase motor control, or a power rail plus three signals. The Rigol DS1054Z is the only four-channel option in this price range, and it is one of the main reasons it remains the hobbyist favorite.
Memory Depth: Longer Captures, Sharper Zooms
Deep memory lets you capture a long time window without losing detail. A scope with 24Mpts (Rigol DS1054Z) can hold far more waveform history than a scope with 1 Kpts (FNIRSI 2C53T). If you work with serial protocols, you need enough memory to capture a full message. For intermittent glitches, deep memory gives you a better chance of catching the event.
Protocol Decode: I2C, SPI, UART, CAN
If you spend any time on serial debugging, hardware protocol decode is a must. The Rigol DS1054Z and Siglent SDS1202X-E both decode I2C, SPI, and UART out of the box. The Siglent adds CAN and LIN, which matters for automotive work. The FNIRSI and HANMATEK models handle basic decode through on-screen cursors but lack the automatic protocol analyzers.
Portability: Benchtop or Handheld
Most hobbyists do their work at a fixed bench, where a larger benchtop scope is more comfortable. If you also work on cars, HVAC, RV electrical systems, or field installations, a handheld scope like the FNIRSI 1013D Plus, HANMATEK HO52, or FNIRSI 2C53T earns its place. Battery power and isolated grounds make field work safer and more convenient.
Frequently Asked Questions
What is the best budget oscilloscope for hobbyists?
The Rigol DS1054Z is the best budget oscilloscope for hobbyists in 2026. It offers 4 channels, 24Mpts memory, and protocol decode for I2C, SPI, and UART. A free community firmware hack unlocks 100MHz bandwidth, making it one of the most capable scopes under $400.
What is the 5x rule for oscilloscope bandwidth?
The 5x rule states that your oscilloscope bandwidth should be at least 5 times the highest frequency signal you plan to measure. For example, if you work on a 10MHz clock signal, choose a scope with at least 50MHz of bandwidth. The headroom ensures accurate rise-time measurements and prevents signal distortion at higher harmonics.
How many channels do I need on an oscilloscope?
For most hobby electronics work, 2 channels are enough. You can probe a clock and data line, or an input and output. If you work with I2C or SPI serial protocols, decode multiple motor phases, or measure power and signal lines simultaneously, 4 channels (like the Rigol DS1054Z) make debugging much easier.
Is 100MHz bandwidth enough for hobby electronics?
Yes, 100MHz is enough for nearly all hobby electronics work in 2026. It covers Arduino, ESP32, Raspberry Pi Pico, basic audio circuits, and most sensor interfaces. You only need more bandwidth (200MHz+) for switch-mode power supplies, RF circuits, or high-speed digital designs.
What is the best and most affordable oscilloscope under $400?
The best affordable oscilloscope under $400 is the Rigol DS1054Z, with the Siglent SDS1202X-E as a close second for users who need 200MHz bandwidth. For budget buyers, the FNIRSI 1013D Plus offers 100MHz with a touchscreen at a lower price, and the FNIRSI 2C53T delivers a 3-in-1 scope, multimeter, and signal generator for under $100.
Final Verdict: Which Oscilloscope Should You Buy in 2026?
After three months of side-by-side testing, the best oscilloscopes under $400 for hobby electronics come down to how you work. If you want the most capable benchtop scope for a home lab, the Rigol DS1054Z remains the unbeatable choice, with four channels, deep memory, and that famous 100MHz firmware hack. If you measure analog signals and need more bandwidth, the Siglent SDS1202X-E is the clear second pick.
For field work and portable use, the FNIRSI 1013D Plus and HANMATEK HO52 both deliver real oscilloscope performance in a battery-powered package. If you want maximum value and minimum price, the FNIRSI 2C53T and 2C23T bundle a scope, multimeter, and signal generator for less than the cost of a single benchtop unit. The HANMATEK DOS1102 is the right answer for first-time buyers who want a simple, friendly scope on a real bench.
Pick the model that fits your bench and your projects. Whatever you choose from this list, you are getting a tool that would have cost three times as much a few years ago. The best oscilloscope is the one you actually use, so buy the one that fits your workflow and start probing.