Best 4-Channel Oscilloscope 2026: Compared at Every Price

Why we like it

The Rigol DS1054Z is the default recommendation in every electronics forum for a reason — it earned that reputation over a decade of consistent performance. Four channels, 12Mpt memory, comprehensive protocol decoding, and an absurd number of trigger types for ~$349 is a package that nothing in this price range matched for years. The 50MHz bandwidth is the only real limitation, and the well-documented hack to unlock 100MHz makes even that a manageable concern. Yes, the newer Rigol DHO924S has better specs in nearly every category — but the DS1054Z has something no spec sheet can quantify: years of solved problems, answered questions, and tutorials from the EEVblog and r/AskElectronics communities. If you're buying your first serious oscilloscope and want to minimize frustration, this is still a great choice. If you can stretch to $449, the DHO924S is the better buy in 2026.

Why we like it

The Siglent SDS1104X-U is Siglent's answer to the 4-channel mid-range market, and its CAN/LIN decoding is its killer differentiator. Rigol charges extra for CAN decoding on most models; Siglent includes it free. If you're doing automotive embedded work — car CAN bus debugging, LIN network analysis, anything that touches vehicle electronics — the SDS1104X-U at $419 is the most cost-effective path to proper protocol support. For general hobbyist use without automotive protocol requirements, the DS1054Z at $349 remains better value, and the Rigol DHO924S at $449 offers 250MHz bandwidth and a touchscreen for just $30 more. I'd buy the SDS1104X-U specifically if CAN/LIN decoding is non-negotiable.

Why we like it

The OWON XDS3064AE is a niche instrument that earns its place for a specific buyer. At ~$800, the 14-bit ADC is its genuine differentiator — that extra vertical resolution matters for precision analog measurements and signal integrity work where standard 8-bit ADCs fall short. The 40Mpt memory depth is also excellent for capturing very long serial transactions. The problem is 60MHz bandwidth at $800 — that's genuinely hard to justify for most hobbyists. The Siglent SDS1104X-U at $419 gives you 100MHz, 4 channels, and CAN/LIN decoding for $380 less. The XDS3064AE only makes sense if you specifically need 14-bit resolution or very deep memory captures — for general-purpose work, better options exist at this price.

Why we like it

The Siglent SDS2104X Plus is a professional-grade scope that happens to be affordable enough for serious hobbyists, and using it for a long debugging session makes the price feel justified. The 200Mpt memory depth is the headline — you can capture minutes of data at full sample rate, then scroll back and zoom into any moment without re-triggering. The 10.1-inch IPS touchscreen is excellent. The comprehensive protocol decoding (including FlexRay and I2S) makes it the right tool for serious automotive or audio embedded work. The surprise is that all this comes with only 100MHz bandwidth — you're paying for depth, features, and build quality, not raw frequency response. At $1,099, this is a serious investment. It only makes sense if you do electronics work regularly enough to amortize that cost, and if you want an instrument you genuinely won't outgrow.