Rare vintage Groove Tube Electronic Bass Pre-Amp. This is the prototype for the famous SWR-200 unit

In excellent working condition. 

Exceptionally good sounding bass amp rack unit. 

Only thing missing is the high frequency potmeter on the eq, which has been bypassed for some reason before I bought it. Easy to remount. 

Restored with a professional Neve tech. Sounds excellent and has loads of great features:

-Hi-lo gain inputs on front.

-Gain

-Limiter 

-Aural Enchancer

-Bass -15 to +15

-Eq - 40-800 frequency. 

-Treble -15 to +15

-Cross over frequency 100-1k

-Master Volume

Back pre amp out 1 - 2 

Headphones out

Eq Footswitch Out 

Crossover out High/Low

XLR Balanced Out

Line/Direct Switch

Effects Loop in/out.

GT12AU7 + Spare Tube.