FiiO K7vsSMSL SU-1
A detailed side-by-side comparison of the FiiO K7 and SMSL SU-1 — two popular dacs in the Chinese HiFi space.
Specifications
Spec
FiiO K7
SMSL SU-1
Chipset
Dual AKM AK4493S
AKM AK4493S
Inputs
USB, Optical, Coaxial, RCA Line In
USB-C, Optical, Coaxial
Outputs
6.35mm SE, 4.4mm Balanced, RCA Line Out
RCA
Features
THX AAA 788+ Amps, RGB Sample Rate Indicator
MQA Decoding, Bus Powered, Metal Chassis
PCM
—
32-bit / 768kHz
Remote Control
✗
✗
Tube Stage
✗
✗
Headphone Amp
✓
✗
Price (estimated)
Price
~$220
~$85
Difference
~$135.00 cheaper (SMSL SU-1)
Things to Know
FiiO K7
- ⚠Slight delay/lag when adjusting volume via the knob (due to ADC volume control implementation).
- ⚠No remote control or Bluetooth input.
- ⚠Volume knob curve is non-linear; volume ramps up very quickly in the last 20% of the turn.
SMSL SU-1
- ⚠No remote control or screen; input switching is a simple button on the front.
- ⚠No balanced outputs (RCA only).
- ⚠Lightweight chassis can easily be pulled off a desk by heavy cables.
* As an affiliate, we may earn a small commission from qualifying purchases — at no extra cost to you.