Saturday, May 14, 2011

Buzz Audio QSP-20 Quad Studio Preamplifier

"The challenge for the modern studio (large or small) is a big sound on a tight budget, so Buzz Audio has done their best to bring you a very high level of audio performance at reasonable price. The QSP 4 channel mic preamp is made with real Class A discrete amplification and high end audio transformers just like the vintage classics of the past. But without the vintage price tag. The QSP has a stunning sound which you will immediately notice and owning a unit means never having to doubt your preamplifier again."


     Discrete Class A amplifiers
     Lundahl* audio output transformers
     Up to 70dB of gain
     +28dBu output headroom
     Culmination of 20 years design experience
     Robust chassis construction
     On board linear power supplies - no wall warts!
     Easy to use control layouts
     Competitive pricing


Min Gain Mic = +22dB (-2dB with pad in)
Max Gain Mic = +70dB
Min Gain Instrument = +12dB (-3dB with pad in)
Max Gain Instrument = +60dB
Maximum Output Level = +29dBu into 3k ohm load.
Frequency Response
Mic = 10Hz to 200kHz @ 20dB gain (-3dB).
Instrument = 10Hz to 120kHz @ 20dB gain (-3dB).

Total Harmonic Distortion
(measured at -20dBu input, gain adjusted for +10dBu output level)
Mic = 0.15% @ 100Hz, 0.01% @ 1kHz, 0.005% @ 10kHz
Instrument = 0.15% @ 100Hz, 0.015% @ 1kHz, 0.015% @10kHz

EIN Mic = -131dB A wtg, 150ohm source Z.
Signal to Noise Ratio Instrument = -76dB A wtg, input shorted.

CMNR Mic = -78dB @ 100Hz, -100dB @ 1kHz, -100dB @ 10kHz.
Input Impedance Mic = 4k ohms/1k2 ohms switchable.
Input Impedance Instrument = 1MEG ohms.

115V or 230V ac mains, switchable on rear panel.

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