The interior of the amplifier. The audio-circuit is hardwired with prototyping board as support. The cathode resistors for the output tube are of the new type in TO220-package (partly visible left of the octal socket). All resistors in the amplifier circuit are 2W metal-film.



The large capacitor at the left side is the filter cap for the heater regulator. The regulator itself is bolted to the chassis and a large heatsink mounted at the top.

This is the high-voltage (150V) power supply unit. The upper, smaller board is the high-voltage regulator with slow-start (that replaces the choke).

Choose your tube - a Svetlana 6AS7G or a 6080WC from Philips ECG (made in US, military grade, marked JAN).

The small one is a Sovtek 6922 (E88CC), used in the input stage. Any E88CC/6DJ8/6922 can be used.

Complete interior of the amplifier. It looks little bit crowded, but it is rather spacy due to the box that are rather thick.

Complete amplifier, equipped with the Svetlana 6AS7. The visible capasitors are the 680uF used for the output.

Rear view of the amplifier. The heatsink is for cooling the heater regulator and the toroid transformer is for the high-voltage. The heater transformer is placed inside the box, right under the visible transformer.

Here is the 6080 used instead.

Tube porn - a close up of the setup with Svetlana 6AS7G + Sovtek 6922.

More tube porn - this time the 6080 is in place.