Leak TROUGH-LINE (1958)
Documentation on the Leak Trough-Line is thin. First, a note on identity. Modern lists sometimes show the Trough-Line as a control unit or preamplifier, but the period record calls it an FM tuner. The archive dates the model to 1958. The name carried on into later variants such as the Trough-Line Stereo.
The fullest contemporary reference is a 1968 feature in Audio-Collection (1968, p.55). It presented the Trough Line Tuner and the Trough Line F.M. Stereo Tuner next to Leak's all-transistor Stereo 30 amplifier (up to 15 watts per channel) as a complete stereo pair. The tuner was credited with a frequency range of 88-108 MHz. The feature called it easy and accurate to tune, and singled it out for minimal drift.
Known specifications:
- Type: FM tuner (later variant: Trough-Line F.M. Stereo)
- Frequency range: 88–108 MHz
- Claimed behavior: easy, accurate tuning; minimal drift — Audio-Collection (1968, p.55)
- Period pairing: Leak Stereo 30 amplifier
No service manual, measured test report or detailed specification sheet has surfaced in the sources available to the archive. Sensitivity and selectivity figures, valve complement and original price are all undocumented for this model.
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