Revox C115 (ca. 1980)

Documentation on the Revox C115 is thin, scattered across forum posts and aggregated spec listings rather than any surviving official brochure. What the record shows: this is a solid-state control amplifier — a preamp — from around 1980, It was a manual-operation unit, with no remote and no digital inputs.

Owners consistently report two things. First, that the C115 sounds very good — one forum user described it as "a very good preamp," and another noted that despite its age it remains "transparent and detailed." Second, that the unit's switches and potentiometers are prone to oxidation and dirt after decades, requiring contact cleaning. The main issue is old switches needing a clean. Some replacement parts, including switches and potentiometers, were still orderable from Revox Austria as of 2023, though certain ICs (like the Philips TD61052P) are no longer available and must be sourced from donor units. A used example was listed at €590 on a German classifieds site, though it's unclear whether it sold.

The frequency response and THD figures differ slightly across sources — one listing claims under 0.008% THD at 1 kHz, another under 0.01% — and since no official Revox manual has surfaced to settle the matter, I've omitted those conflicting numbers rather than guess. The signal-to-noise ratio, however, is consistently cited at better than 103 dB in stereo.