SP9 MkIII vs LS15
The LS15's thd is 0.010% against the SP9 MkIII's 0.100%, its output impedance 600Ω against 500Ω, and its input impedance 200000Ω against 50Ω. Both share output voltage (2.0V RMS).
AI-generated product photo — not official manufacturer imagery.
AmplifiersPre-AmplifiersTube AmplifiersDiscontinued
Estimated price (community-sourced)
$1,017.50
Around — community and catalog average, updates slowly
About the SP9 MkIII
The SP-9 MKIII is part of a successful line of preamplifiers from Audio Research, with over 7,000 units sold by the time it was released. It includes several technical improvements over its predecessors, such as the use of M.I.T. capacitors, additional filter and bypass caps for the power supply, a new input board, and gold-sleeved tube sockets. The preamplifier is equipped with twin tape inputs and outputs, full monitor switching, and automatic muting for warm-up or voltage drops.
Specifications
Power Specifications
Amplification power output and characteristics
- Input Impedance
- 50Ω
Analog Output
Analog signal output specifications
- THD
- 0.100%
- Output Voltage
- 2.0V RMS
- Output Impedance
- 500Ω
Connectivity
Input and output connections
- Analog Inputs
- line, phono
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 480 × 134 × 260 mm (W × H × D)
- Weight
- 6 kg (13 lbs)
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions