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Pentode & Tetrode Amplifiers

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6SN7 Preamplifier (Topaz Preamplifier)
Touchstone Preamplifier (Tempest Preamplifier)
Time Machine Preamplifier
Time Machine 2A3 / 45 Preamplifier / Headphone amplifier / Amplifier.



Pictures show TJ Full Music tubes, these tubes are no longer supplied with the TM-Pre.




Now available for order.
Price $2995.00 including headphone out and speaker output, and also including bent metal remote volume control.
Supplied with Shuguang 2A3C, Philips NOS small signal tubes (while stocks last), and Shuguang 5U4g rectifier tube.
(Shown with optional Jarrah plinth. +$50.00)

Due to an unacceptable failure rate (over 30%) I will no longer be offering TJ full Music tubes.
Pictures show TJ Full Music tubes, these tubes are no longer supplied with the TM-Pre.


Specifications as Preamplifier / Headphone amplifier

Gain ............................12db (5db when using 6SN7)
Frequency response.......15hz to >50khz
Separation.......……….....>55db
Signal to Noise..............>92db A Weighted
Signal to Hum…….…......>80db below signal at all output levels
Distortion.................…..<0.05% at 0.5 volt rms output
Hum Level…………….......<0.1 millivolt
Output impedance.........<10.0 ohm
Inputs………..…………......4


Specifications as Amplifier

Power Output...............2 watts per channel (3.5 for 2A3)
Frequency response......-3db - 15hz to >30khz
Separation...................>55db
Signal to Noise.............>94db
Signal to Hum..............>78db
Distortion....................< 0.2% at 0.5 watt
Hum Level...................< 1.0millivolt
Sensitivity....................700mV
Inputs.........................4
Speaker output.............8 ohm (6 to 12ohm)
Damping factor............>4.0 20hz to 20khz 8 ohms

Weight ~20kg (~44lb)




Pictures show TJ Full Music tubes, these tubes are no longer supplied with the TM-Pre.



Pictures show TJ Full Music tubes, these tubes are no longer supplied with the TM-Pre.
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