Fidelity-Research FTR-2
¥ 9,800 (around 1970)
Commentary
Head amplifier designed to step-up the output of MC type cartridge.
It consists of two transistors. Instead of using silicon transistors, germanium transistor 2SB-377 was used after rigorous testing from both measurement and hearing.
The voltage gain can be changed between 40 dB and 0 dB using the selector switch on the front panel.
Suitable for cartridges with impedance from 1 ~ 2 Ω class to 30 ~ 50 Ω class.
4 AA batteries are used for power supply.
It comes with an adapter that can be easily inserted into the player case and a cord with a pin plug.
Model Rating
| Type | Head amplifier |
| Input | Compatible with FR-1 cartridge Suitable for low impedance low output cartridges of 50 Ω or less |
| Output | Suitable for magnetic PU input of commercial preamp |
| Input impedance | 100 Ω |
| Output impedance | 10k Ω |
| Frequency range | 10 Hz to 100 kHz -2dB |
| Voltage gain | 40 dB (100 times) |
| Output voltage | 8 mv or more (50mm/sec when connected to FR-1)-11kHz) |
| Bruit | -95dBs (input 1 mV, 1 kHz) |
| Compatible Dry Battery | UM-3 (AAA) x4, 6 V |
| External dimensions | W 72x H 49x D 113 mm |
| Attachment | Output code |