Siglent
Siglent SDS804X HD Review
Reviewed by HobbyistScope Team · Updated March 2026
$438
◆ At a Glance
◆ Best For
◆ Pros & Cons
Pros
- 12-bit ADC with what Reddit considers a cleaner analog front-end than Rigol — LeCroy heritage shows
- 2GSa/s sample rate is genuinely faster than the DHO804's 1.25GSa/s
- 50Mpt memory depth matches the DHO924S and doubles the DHO804
- CAN and LIN decoding included free — Siglent's standard generosity on protocols
- 70MHz bandwidth is unlockable to 200MHz via software license — massive upgrade path
- 7-inch capacitive touchscreen with responsive multi-touch gestures
Cons
- 70MHz stock bandwidth is limiting — you're paying for the upgrade path, not the base spec
- No built-in function generator (optional add-on)
- Siglent's community is smaller than Rigol's — fewer tutorials and forum answers
- At ~$438, you're close to the DHO924S at $449 which has 250MHz stock bandwidth
You'll Also Need
Common accessories that pair well with this scope.
Hantek PP-200 200MHz Probe Set (2x)
Replacement 200MHz passive probes compatible with most bench scopes
Buy on Amazon · $18 →DEVMO USB Logic Analyzer 8-Channel
8-channel logic analyzer for debugging digital signals and protocols
Buy on Amazon · $14 →Coaxial BNC Cable 50Ω (3-pack)
BNC to BNC 50Ω coax cables for signal connections
Buy on Amazon · $12 →Siglent SDS804X HD
Prices may change · Free shipping with Prime
Our Verdict
The Siglent SDS804X HD is THE competitor to the Rigol DHO804 that Reddit can't stop debating. On paper, 70MHz for $438 looks underwhelming — but the real story is Siglent's 12-bit ADC implementation, which the community consistently praises as having a cleaner noise floor than Rigol's, thanks to Siglent's LeCroy heritage in analog front-end design. The 2GSa/s sample rate and 50Mpt memory depth are both better than the DHO804. The bandwidth unlock to 200MHz via software license is the ace up its sleeve — it turns a $438 scope into a legitimate 200MHz instrument for an additional fee. If you value measurement quality over raw bandwidth numbers, this is the 12-bit scope to buy. If you just want the most bandwidth per dollar, the DHO924S at $449 with 250MHz is hard to argue against.
Siglent SDS804X HD
$438
Prices may change · Free shipping with Prime
◆ Full Specifications
| Full Specifications | |
|---|---|
| Bandwidth | 70MHz |
| Sample Rate | 2GSa/s |
| Channels | 4 |
| Memory Depth | 50 Mpts |
| Display Size | 7" |
| Display Type | IPS Touchscreen |
| Form Factor | Benchtop |
| Weight | 2.6kg |
| Dimensions | 312 x 151 x 133 mm |
| Protocol Decoder | SPI, I2C, UART, CAN, LIN |
| Function Generator | No |
| WiFi | Yes |
| Battery Option | No |
| Trigger Types | Edge, Pulse, Slope, Video, Window, Interval, Dropout, Runt, Pattern |
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◆ Head-to-Head Comparisons
Siglent SDS804X HD
$438
Prices may change · Free shipping with Prime
SDS804X HD
Buy on Amazon · $438