Fidelity-Research FRT-5
¥ 33,000 (released in July 1978)
¥ 45,000 (around 1980)
Commentary
Step-up transformer planned and designed for FR-7.
Toroidal transformer is adopted.
The core material of the toroidal transformer is a special permalloy molded like cellotape and floats from the outer shell with a special compound to protect it from mechanical impact.
The coil is wound thousands of times by passing it through this doughnut-shaped shell once at a time.
The FRT-5 has been further improved to eliminate impedance switching and to use only low impedance cartridges with coil impedance of 10 Ω or less for MC type cartridges.
The input jacks have a Route 3.
Model Rating
| Type | Booster transformer |
| Input (primary) impedance | 3 Ω ~ 10 Ω |
| Load (secondary) impedance | 47k Ω ~ 50k Ω |
| Boost ratio | 31 db (at 3 Ω) 29 db (at 10 Ω) |
| Playback frequency range | 15 Hz to 50 kHz |
| Output cord length | 65cm |
| External dimensions | Width 150x Height 50x Depth 113 mm |
| Weight | 920g |