SA-31MK vs SP-331
The SP-331's input sensitivity is 1.5V RMS against the SA-31MK's 0.3V RMS. Both share signal-to-noise (95 dB), thd (0.100%), and input impedance (47Ω).
AI-generated product photo — not official manufacturer imagery.
AmplifiersPre-AmplifiersTube AmplifiersDiscontinued
Estimated price (community-sourced)
$849
Around — community and catalog average, updates slowly
About the SA-31MK
The Vincent SA-31MK is an advanced hybrid preamplifier that combines vacuum tube warmth with solid-state reliability. It features a new output stage design with four 6N16 vacuum tubes, including a Pure Class A final output stage, delivering a detailed and delicate soundstage. The unit includes six remote-selectable RCA line inputs, two RCA outputs, and one RCA recording output. It has a large toroidal power transformer for stable voltage and current supply. The SA-31MK offers electronic volume and input controls with wireless remote control for convenience. It is available in black or silver finish and weighs 18 lbs (8 kg). Dimensions are 17" (W) x 3.75" (H) x 14.3" (D).
Specifications
Power Specifications
Amplification power output and characteristics
- Input Sensitivity
- 0.3V RMS
- Input Impedance
- 47Ω
Analog Output
Analog signal output specifications
- THD
- 0.100%
- SNR
- 95 dB
- Output Voltage
- 2.0V RMS
Connectivity
Input and output connections
- Analog Inputs
- RCA, RCA, RCA, RCA, RCA, RCA
- Analog Outputs
- RCA, RCA Rec Out
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 430 × 95 × 365 mm (W × H × D)
- Weight
- 8 kg (18 lbs)
- Available Colors
- Black, Silver
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions