What kind of power output did they finally reach with this design?
here are the specs:
Specifications
Output power: 25 Watt
Class of operation: Push-Pull (class A)
Tubes complement: 4x EL84 (6P14P-EV), 1x ECC82 per mono
Outputs 4 – 8 Ohms
Input sensitivity: 2.8V rms
THD %: 0.03% – 1W/1KHz, 1% – 25W/1KHz
Frequency bandwidth: 10Hz(-1dB)-95KHz( -3dB)
S/N Ratio: 82 dB
Input inpedance: 100K
Size: 430x290x165 mm
Weight: 20 Kg