Nakamichi CA-5

Name: Nakamichi CA-5
Brand: Nakamichi

Nakamichi is remembered for its cassette decks, but in the mid-to-late 1980s the company also pushed hard into separates. The CA-5 was the control amplifier (Nakamichi's term for a preamp) in that lineup. It was designed to sit alongside the PA-5 power amplifier, shared its styling and connected to it with a proprietary cable. The pair appears together in the 1987 Nakamichi catalog. Audio (August 1985, p.5) ran Nakamichi's own advertising for the CA-5 alongside the ST-7 tuner and PA-7 amplifier, urging listeners to hear "the clarity, the transparency" of the electronics.

Documentation on the CA-5 itself is thin. No production years, original price or dimensions have surfaced in any source. The record does show both MM and MC phono inputs. Available sources describe the MC stage inconsistently, either as moving-coil transformer-based or as a head amp with 30dB gain. RIAA accuracy is given as ±0.5dB for both stages. Tone controls provide ±10dB at 20Hz (bass) and ±10dB at 20kHz (treble), and the tone control circuit can be switched out of the signal path entirely. One review source cites signal-to-noise at 76dB (MM) and 63dB (MC), while an owner forum post claims roughly 75dB on MM. The discrepancy likely comes down to different measurement standards. There is no power switch on the unit itself. It was switched externally, typically through the connected PA-5.

The phono stage earned particular praise. One reviewer called it among the quietest they had measured, "dead silent on MM," though they noted the MC headroom could feel limiting during loud classical crescendos. Owners describe the CA-5 as neutral and transparent, with usable, subtle tone controls. Some find the Nakamichi "house sound" a bit warm and polite next to more aggressively detailed rivals.

Known issues on the used market: the balance pot can develop crackle, and a common fix is bypassing it entirely. Swollen capacitors in the phono stage can dull the highs over time. The MC step-up transformers are reportedly hard to find as replacements. Current asking prices run roughly $800-$1,000 for clean units. Working examples with cosmetic wear go for $400-$500, and prices have declined slightly from COVID-era peaks.