We can provide power transformer which use for 117V, 220V, 230V, 240V.
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845 SE tube amplifier pure class A output 20W/channel No Negative Feedback
845 SE tube amplifier pure class A output 20W/channel.
This amplifier use 6J7 ( you can use 6J7G, EF-37 or WE348A also) in prestage. Driver stage use 6SN7 to drive 845 tube.
Input is RCA, XLR is option, you can choose input transformer for your balanced input XLR.
This use fixed bias. There is current meter for monitoring plate current on 845 tube real time. You can also change bias current on 845 by bias volume adjuster.
No NFB was adopted, the hum level is only 0.3mV. Sound is powerful, clear, sweet and detail with all characteristic of 845 tube.
With 20W per channel, it can drive almost speakers without problem.
Previous stage is 6J7G, driver tube is 6SN7, 845 current is about 70-80mA.
Response frequency : 16Hz - 30KHz
Hum level : 0.3mV
THD: 5% @ 20W/channel
This amplifier use 6J7 ( you can use 6J7G, EF-37 or WE348A also) in prestage. Driver stage use 6SN7 to drive 845 tube.
Input is RCA, XLR is option, you can choose input transformer for your balanced input XLR.
This use fixed bias. There is current meter for monitoring plate current on 845 tube real time. You can also change bias current on 845 by bias volume adjuster.
No NFB was adopted, the hum level is only 0.3mV. Sound is powerful, clear, sweet and detail with all characteristic of 845 tube.
With 20W per channel, it can drive almost speakers without problem.
Previous stage is 6J7G, driver tube is 6SN7, 845 current is about 70-80mA.
Response frequency : 16Hz - 30KHz
Hum level : 0.3mV
THD: 5% @ 20W/channel
$4,000.00
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