This rare tube preamp/practice amp is in perfect condition, original owner, in original box with manual, low hours on original tubes, in storage for years. Just gone through by local San Diego amp tech John Balesteri. Schematic diagram included.
All it needed was two capacitors and a bit of DeOxit spray to quiet the treble pot.
Works great and sounds amazing, for direct recording, headphone practice, into a guitar amp, and super cool directly into a guitar cabinet using the internal 4.5 watt amp.
The Metal Master with gain dialed up produces a heavy metal guitar tone typical of Led Zepplin, Deep Purple and Black Sabbath.
Despite the name, this mini amp can produce a warm clean sound when set to lower gain levels and the tone can be varied widely with its effective EQ. When desired it will blare out 1980s style screaming metal with the gain turned up. Overall it makes a great head for practice amp or recording DI or as an effect unit in a pedal chain. The
Metal Master is the same form factor as the other
Hughes & Kettner "Sound Machine" low power amps. It is equipped with two 12AX7 (ECC83) valves in the pre-amp, 3 EQ bands and a 4.5W solid-state power amp, which drives speakers through the speaker output. As can be seen in the photo, it is has a wide range of output jacks. These include: tube amp out, instrument out, mix out, cabinetular out (similar in function to a H & K RedBox) and speaker out. It even contains a switchable headphone jack, which makes the unit ideal as a fully featured amp for quiet practice.