It’s a recurring story at Vitus Audio: After much cautious and painstaking consideration, we will make a critical change to one product which then has unforeseen implications, enabling us to make significant improvements to other items in our range.

In 2010 we made some transformational improvements to the Vitus Audio SL-103 preamplifier, inspired by the fundamental innovations inherent in the design of the Masterpiece Series MP-P201. We increased the number of regulation levels in the power supply and added more volume steps to accommodate higher resolution in the attenuation.

The original SL-100 was launched at CES in January of 2004 and this lineage in the Signature Series has been a firm favourite with audiophiles ever since. This current iteration pairs perfectly with our SM-011 Monaural Power Amplifiers to create a system to satisfy the most demanding cravings for musicality and performance.

The SL-103 comes in Pure White, Jet Black or Warm Silver as standard. Titanium Orange, Dark Champagne and Titanium Grey are our most popular unique finishes.

Technical Specifications

RCA Inputs: 2 Pairs
XLR Inputs: 3 Pairs
Sensitivity: 2/4/8 VRMS (RCA & XLR)
Impedance: 10Ω
Pre Outputs: RCA – 2 Pairs 80Ω or XLR – 3 Pairs 80Ω. Secondary XLR Outputs – 1 Pair 75Ω
Tape Output: RCA – 1 Pair
Frequency Response: +800kHz
Signal to noise ratio: >110dB @ 1kHz
THD + noise: <0.01%
Volume Control Type: Relay controlled fixed resistor network,
Volume Control Steps: -90dB to +18dB in 0.5dB steps
Power Consumption: Standby – <1W, Operation – ~45W
Dimensions (W x H x D): 435 x 135 x 428mm
Weight: 25kg
Material: Aluminium for body parts and hidden heat sinks