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It is hard to explain how this stereo tube microphone-line preamplifier “does not” sound, since is less prone to classic tube colouration.
Optimized towards capturing the subtlest detail of music and ambience, with it's entirely balanced circuitry, the SMP-2 is able to deliver extremely wide dynamic range in your stereo works, intended for demanding acoustic recordings.
Due to our “high linearity” design philosophy, the absence of the Lo-Cut facility allows the highest phase linearity throughout the entire audio band, especially at the very lowest frequencies, and thanks to it's full symmetric balanced topology (the two rails work together in reversed phase in a Push-Pull configuration), the circuit is able to cancel out distortion and non linearity, also significantly extending the amplifier headroom, a very important feature when handling high dynamic material such as vocals.

A Microphone-Line preamplifier intended for stereophonic miking techniques: coincident stereophony (X-Y, M-S, Blumlein, Stereosonic), spaced pairs (A-B, NOS, OSS), etc.

An all valve-based equipment entirely hand-crafted.

The components used are all selected with the strictest tolerance, and tested by ear.

SMP-2 Tube Stereo Mic Preamp SMP-2
SMP-2

Tube Dual Microphone/line preamplifier
Intended for Stereo Miking Techniques
All valve-based circuitry
Filtered and regulated external power supply
Minimum signal path preserving audio integrity
Entirely balanced signal route with paralleled Class A differential stages
Absence of capacitors and resistors in the audio path
Fixed gain stages for less audio coloration
11-step gain control through a custom multi-tap audio transformer
Linear frequency response over the entire audio range and beyond
Ultra linear phase response

Technical data Download the brochure
SMP-2

Frequency response (+0/-3dB): 15Hz — 45KHz
C.M.R.R.: ›60dB
Signal/noise ratio at 20dB 22Hz/22KHz 600-ohm terminated: ›80dBu
Maximum output level for 1% THD+Noise: +18dBm
Input impedance: 1K ohm
Output impedance: 600 ohms
Chassis: Rackmount, 2-unit
Dimensions (WxHxD) inches: 19 x 3.465 x 16.14
Net weight: 25.13 lbs