JC-2 | Preamplifier | 1974 - 1977

As its name indicates this preamplifier was designed by John Curl.

It's one of the earliest design of MLAS, and the ML-1 can be considered as an upgrade of the JC-2, it retains the modular architecture. You should have a look at both pages to get the complete information.

Module switches

See ML-1 description.

System	Rocker Switch	Function	Open	Closed
A3	1 2	input impedance gain	100K 30dB	50K 40dB
D5	1 2	CRC gain	CRC out 54dB	CRC in 60dB
D6	1 2	CRC gain	CRC out 60dB	CRC in 66dB

Schematics

The ML-1 uses the same design : a phono (pre-preamplifier) is inserted at the beginning of the signal path by the input selector. Then the signal goes directly to the  output amplifier module.
Note that the 2 op amps symbols internal cicuitry is described on the right side.

Specifications

They can be found in this Italian brochure.

Pictures