睿志音响

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 . Below describe is base on the Vacuum 1 SE (Except especial note)
Built in Vacuum Valves	Russian Aviation grade: Vacuum HE1 SE: 6H2N-EB 4 and 6U4N-EB 4 Vacuum HE1 XLR: 6H2N-EB 6 and 6U4N-EB 4 Filament voltage: 6.3V Input power supply: 200-250VAC Or 100-125VAC
Burn in time	The unit had 100 hours in factory. Another 100 hours burn in is recommend.
Warm time	20 Minutes
Power on time	No limit.
S/N Ratio	Vacuum HE1 SE: >88DB (2V input，2VRMS output , Unweighted ) Vacuum HE1 XLR: >96DB (2V input，2VRMS output , Unweighted )
Output impedance	<300 ohm (RCA)
Frequency Response	Single-ended (<-3DB)	Balanced (<-3DB)

THD	Single-ended (<0.05%)	Balanced (<0.02%)

	Single-ended (<0.05%)	Balanced (<0.02%)

Input Sensitivity	1V RMS output：280MV
Gain	11DB
Power Requirement	Version 1: 100-120V AC 50/60 Hz Version 2: 220-240V AC 50/60 Hz
Power Consumption	30W (Vacuum 1 SE) 35W (Vacuum 1 XLR)
Package Weight	Approximately 16KG
Dimensions	W430 X L430 X H93 (MM ) (MM,with feet, full aluminum )
Accessories	AC power cord X1

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