QUAD Acoustical MB pair audio amplifiers alike Quad QA12/P rare working KT66 EF37 6SN7GT GZ32

Description

The MB Acoustical Amplifiers here shown were made in a short period of time and remain as rare as the QA12/P.

The MB are actually the early type of QA12/P with the same circuit design and configuration.

The MB amplifiers have tone control and filter located on top. They have output impedance of 7 and 15 Ohm and with 15 sweet watts to deliver. Some new filter caps fitted rest is fine. The MB Acoustical was also a portable amplifier for cinema and public address, works at 220/240 Volts and can be fitted as car amplifier for PA by means of a vibrator for HT, a truly masterpiece. Works with pair of KT66; 6SN7Gt EF37 and GZ332.