F7
F7

F7

Vendor
First Watt
Regular price
$3,000.00
Sale price
$3,000.00

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Unique two-stage push-pull amplifier.  Very little feedback, a little positive current feedback gives this amplifier a unique sound and great control. 

20 watts per channel, low output impedance (high damping factor), and a relatively low input impedance of 10K ohms. 

As close to a perfectly transparent amplifier as you are going to see.

 

Nominal specifications:

Measured at 120 V AC and an 8 ohm load:

Distortion @ 1 watt 0.05%
Output power 8 ohms
20 watts @ 2% THD, 1KHz
Output power 4 ohms

30 watts @ 3% THD, 1KHz

Input Impedance
10 Kohms
Gain
14.5 dB
Damping Factor
>100
Input Sensitivity (1 watt)

 

0.53 V

Input Sensitivity (max output)

2.7 V

Output Noise
100 uV unweighted 20 - 20 KHz
 
Power consumption
170 watts
Fuse

3AG slow blow type -

2.5 Amp for 120VAC

1.25 Amp for 240 VAC