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   Wire connections to be made between the PCB and the tubes "19j6" and between the transistors and the PCB. 19J6 selling tubes on EBAY: whipcitytubes, whipcitytubes, fair prices, good products, moderate shipping costs.  For sale at Aliexpress:
Potentiometer knob Mcintosh 23 x 16 mm, excellent product.  TEK active control module for stereo VU meter of in "AUDIOPHONIC"  An embodiment according to the website of Pete Millett: "The Starving Student" hybrid headphone amplifier
A very good site that I recommend, a gold mine! and the following boards: diyforums
SPECIFIC ASPECTS
a "McIntosh" look, for screen printing it is especially easy to achieve!
- Power Integration 48 volts CISCO mark in the cabinet with the cut-off switch, the power circuit is removed from the plastic housing in order to connect the mains terminals.
- Power protection in a small metal housing.
- Realization of a circuit board.
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Added 2 VU meters and its corresponding circuit.
- Adding a transformer 230v / 12V 3 Va to power the circuit level meters.
- Set against-plated 0.31 inch covered with aluminum sheet 0.019 inch thick glued to the contact cement and painted black.
- Frame made of galvanized steel sheet of 0,078 inch thick.
- Front: realization of a screen printing on transparent polyester placed between two sheets of polycarbonate (or glass).
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The Starving Student hybrid: Good dynamic, powerful, pleasant and detailed soundstage. A little surprising amp! No breath, no background noise and enough room in the box for adding a USB port in the future to add to it a digital / analog quality.
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