DIY - Hybrid Headphone Amplifier
Wire connections to be made between
the PCB and the tubes "19j6".
19J6 selling tubes on EBAY: 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
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. 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.
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.