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
