Heritage

Model Type Production years
Preamplifiers
C - 4 Vacuum tube before 1975
C - 7 Vacuum tube 1977 – 1980
C - 7A Vacuum tube 1980 – 1982
C - 7A (revised edition) Vacuum tube 1982 – 1986
C - 8 Hybrid 1981 – 1986
C - 9 Vacuum tube Unknown
Power amplifiers
M - 7A Hybrid 1978 – 1980
M - 7B Hybrid 1981 – 1986
M - 8 Hybrid 1981 – 1986
Loudspeakers
Elite Dynamic 1985 – 1986
Premier Dynamic 1985 – 1986

C - 4 preamplifier

Features

  • dual monoaural construction;
  • dual cascode design.

Specifications

Type
Dual mono
Operating voltage
110 / 120 V, 50 / 60 Hz
switchable to 220 / 240 V
Finish
Silver

Documentation

Unfortunately, there are no documents for this product.

C - 7 / C - 7A / C - 7A RE preamplifier

Features

  • dual monoaural construction;
  • circuitry designed by Gabriel Sakakeeny;
  • cascode design.

Specifications

Type
Dual mono
Operating voltage
110 / 120 V, 50 / 60 Hz
switchable to 220 / 240 V
Finish
Black

Documentation

Unfortunately, there are no documents for this product.

C - 8 preamplifier

Features

  • dual monoaural construction;
  • hybrid cascode design.

Specifications

Type
Dual mono
Operating voltage
110 / 120 V, 50 / 60 Hz
switchable to 220 / 240 V
Finish
Black

Documentation

Unfortunately, there are no documents for this product.

C - 9 preamplifier

Features

  • dual monoaural construction;
  • all cascode design.

Specifications

Type
Dual mono
Operating voltage
110 / 120 V, 50 / 60 Hz
switchable to 220 / 240 V
Finish
Black

Documentation

Unfortunately, there are no documents for this product.

M - 7A / M - 7B power amplifier

Features

  • dual-monoaural construction;
  • circuitry designed by Gabriel Sakakeeny
  • hybrid triode/pentode design:
    • 12AX7 triodes in input stage;
    • EL-34 pentodes in output stage;
  • switchable to bridged mode for monoaural operation.

Specifications

Type
Dual mono
Maximum output power
2 × 50 W ( stereo )
1 × 100 W ( bridged )
Frequency response
20  … 100, 000 Hz
Load impedance
4 / 8 / 16 Ω
Operating voltage
110 / 120 V, 50 / 60 Hz
switchable to 220 / 240 V
Finish
Black

Documentation

ID Title Type Date Size
PF - M7A - 00001 M - 7A Schematic diagram, revision 2 PDF Oct 03, 2014 1, 101 KiB
PF - M7A - 00002 M - 7A Bill of materials, revision 1 PDF Jul 02, 2014 1, 101 KiB
PF - M7A - 00003 M - 7A Transformer wiring for 220 / 240 V mains, revision 1 PDF Oct 09, 2014 819 KiB