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Master 1 Vacuum

8 pc vacuum valves preamp
Without built in silicon elements on signal and power circuits

All power caps built with SOLEN film caps
All vacuum valve filament power supply by AC
Remote function



Summarize Use Manual Specs Custom Option Shipping Cost

          The active components all are the nonlinear components, it can not has the perfect on every side . While we design the unit, we had to choice the perfect area of the components .
          We had consider the most power amp has around 1V input sensitivity, while the preamp output 1V level, the power amp has full power output, so we decided make the perfect area on the 2V and below output level .
          About the frequency band, we have not looking for the best specs on paper, but we have through the long term listen and adjust to confirm the final parameter .

Built in Vacuum Valves
Russian Aviation grade:
6H2N-EB *6
6U4N-EB *4

Filament voltage: 6.3V

Input power supply: 210-250VAC Or 105-125VAC

Burn in time
The unit had 100 hours in factory.
Another 100 hours burn in is recommend.

Warm time
20 minutes

S/N Ratio
>88DB (2V input,2VRMS output , Unweighted )

Output impedance
<300 ohm (RCA/ XLR)
Frequency Response

Input Sensitivity

1V RMS output:280MV



Power Requirement
 Version 1: 100-120V  AC 50/60 Hz
Version 2:  220-240V  AC 50/60 Hz
Power Consumption
Package Weight
Approximately 16KG

W430 X L430 X H93 (MM ) 
AC power cord     X1



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