Description: Dynaco ST70 Modified tube amplifier12AU7 SRPP input,12R-LL ( equivalent to 12AV7) differential pair phase inverter,5881 ultralinear output,5T4 rectifier.The bias point was set at 38mA (1.2V).23W clean power on 8 ohm verified by oscilloscope,You can use EL34 and adjust the bias to 1.56V, more power can be produced. You can even change the rectifier tube back to 5AR4/GZ34, which will produce higher B+ voltage.It sounds excellent, dead quiet at no input signal.
Price: 600 USD
Location: Hong Kong
End Time: 2024-09-28T03:14:29.000Z
Shipping Cost: 380 USD
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Item Specifics
All returns accepted: ReturnsNotAccepted
Brand: Dynaco
Type: Tube Amplifier
Model: ST70
Country/Region of Manufacture: United States
