Rigol DS1104Z-S Plus vs Siglent SDS814X HD
Head-to-head spec comparison to help you pick the right scope for your bench.
Rigol
$549
Siglent
$587
Spec-by-Spec Comparison
| Spec | Rigol DS1104Z-S Plus | Siglent SDS814X HD |
|---|---|---|
| Bandwidth | 100 MHz | 100 MHz |
| Sample Rate | 1 GSa/s | 2 GSa/s |
| Channels | 4 | 4 |
| Memory Depth | 12 Mpts | 50 Mpts |
| Display Size | 7" | 7" |
| Weight | 3.2 kg | 2.6 kg |
| Price | $549 | $587 |
| Rating | 7.0/10 | 7.5/10 |
| Protocol Decoder | Yes | Yes |
| Function Gen | Yes | No |
| WiFi | No | Yes |
| Battery | No | No |
| Buy on Amazon · $549 | Buy on Amazon · $587 |
Pros & Cons
Rigol DS1104Z-S Plus
Pros
- 100MHz bandwidth with 4 channels — no bandwidth hack needed
- Built-in 25MHz function generator saves desk space and cost
- Same excellent trigger set as the DS1054Z
- Protocol decoding (SPI, I2C, UART) included
- Proven platform for teaching labs that need scope plus signal generator
Cons
- At ~$549, the DHO924S delivers more for $100 less
- Same dated interface as the DS1054Z — no touchscreen
- No WiFi or CAN/LIN decoding at this price
- The DS1000Z platform is aging compared to the DHO series
Siglent SDS814X HD
Pros
- 12-bit ADC with Siglent's clean analog front-end — LeCroy lineage in the signal path
- 100MHz bandwidth with the option to unlock higher via software license
- 2GSa/s sample rate outperforms the competing Rigol DHO814's 1.25GSa/s
- 50Mpt memory depth for extended capture sessions
- CAN and LIN decoding included free — Siglent's consistent protocol advantage
- 16 digital channels available with optional logic probe for mixed-signal work
Cons
- At ~$587, you're paying a premium over the DHO924S ($449) which has 250MHz
- Siglent's smaller community means fewer tutorials and troubleshooting resources
- No built-in function generator without the optional add-on
- The SDS804X HD at $438 offers 70MHz (unlockable to 200MHz) for $150 less
Our Verdicts
Rigol DS1104Z-S Plus
The DS1104Z-S Plus is the DS1054Z with the limitations officially removed: full 100MHz bandwidth and a built-in 25MHz function generator. At ~$549, it's the premium version of a proven platform that has a decade of community support behind it. The problem in 2026 is the Rigol DHO924S — it costs $100 less, has 250MHz bandwidth, a 7-inch IPS touchscreen, WiFi, 50Mpt memory, and is generally a better scope in almost every way. The DS1104Z-S Plus's advantage is its established reliability and the integrated function generator, which the base DHO924S also includes. I'd only choose this over the DHO924S if you're buying for a teaching lab with specific software integration requirements, or if you specifically need the proven DS1000Z platform.
Siglent SDS814X HD
The Siglent SDS814X HD steps up to 100MHz from the SDS804X HD's 70MHz, keeping the same excellent 12-bit ADC, 2GSa/s sample rate, and 50Mpt memory. It competes directly with the Rigol DHO814 at a similar price point, and wins on sample rate and memory depth. The free CAN/LIN decoding is Siglent's consistent advantage over Rigol for automotive work. At ~$587 though, the value proposition gets complicated — the DHO924S offers 250MHz and a function generator for $449, and the SDS804X HD below it at $438 can be unlocked to 200MHz. The SDS814X HD makes the most sense if you need that clean 12-bit Siglent ADC at 100MHz and want CAN/LIN decoding without additional license fees, particularly for automotive or precision analog work.