GamuT D3i Dual Mono Preamplifier excellent.

D3i Dual Mono Preamplifier Control the power Our solid state preamplifier. With a userfriendly design matching GamuT amplifiers. Pre-amps are an often overlooked component in the chain of sources and the GamuT D3i pre-amp delivers the true undistorted and fullbodied signal. Features: All components used in the D 3i are of the highest quality and have been selected through intensive listing sessions from the PCB itself over the non-magnetic chassis to the legendary Neutrik XLR connectors. Dual Mos-fet hybrid in-and output buffer. Soft coupled feet suspend the complete chassis. Internally shielding separates the cabinet for power supply and amplifier section Dual mono construction with separate power supply for each channel. Very powerful power supply with high bandwidth and low impedance

http://www.whathifi.com/gamut/d3id200i-prepower-amplifier/review

Specifications
Maximum input level 10Vrms @ 1 % THD+N (Balanced)
5Vrms @ 1 % THD+N (Unbalanced)
Maximum output level 10Vrms @ 1 % THD+N (Balanced)
5Vrms @ 1 % THD+N (Unbalanced)
Signal to noise ratio 110 dBA
THD+N