REF 3 vs SP11 MkII
The SP11 MkII's output impedance is 250Ω against the REF 3's 600Ω. Both share output voltage (2.0V RMS).
AI-generated product photo — not official manufacturer imagery.
AmplifiersTube AmplifiersPre-AmplifiersDiscontinued
Estimated price (community-sourced)
$3,350
Around — community and catalog average, updates slowly
About the REF 3
The REF 3 features a completely new all-tube audio circuit and hybrid power supply, utilizing four 6H30 triodes and FETs for constant-current sources. It offers a clean front panel design with a large vacuum-fluorescent display showing volume, input, and tube operating hours. The preamp is praised for its smooth, detailed sound and ability to handle both small and large-scale dynamics with ease.
Specifications
Analog Output
Analog signal output specifications
- Output Voltage
- 2.0V RMS
- Output Impedance
- 600Ω
Connectivity
Input and output connections
- Analog Inputs
- BAL, SE
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions