Here are some images of the 300 watt amps.....
Tube amps can look darmatic at night because of the blue glow seen in power tubes. It isn't dangerous to be
near tubes that are on; its just a flurescense effect phenomenon that occurs when tubes are healthy.
Another night pic....
This is not a trick picture; there really are a dozen 6550 to do the business....
A daytime pic of the amps.....
The connection of the speaker cables is now not as shown but taken to the output transformer ends of the amp chassis.
The 12 red leds near the middle of the amp chassis ( just visible ) were to indicate if the bias for a tube is wrong.
The latest amp version has now just 12 x 5mm dia holes with 12 recessed test points so an owner can easily measure the cathode bias voltage for each output tube in 2 minutes to see if all is well perhaps every 3 mths.
Active protection will protect against any serious problems.
Another angle...
Umblical cables between the power supply and amp chassis are mobile crane cables meant for 415V 3 phase mains supply with 5 inner cables in each black insualtion sheath, each one rated for 20 amps.
This man builds amps...........
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