Kenwood L 07C II (1980–1982)
A flagship dual-mono preamplifier from Kenwood’s elite L-07 series, built for precision and transparency with discrete circuitry and independent channel power supplies.
Overview
The Kenwood L 07C II is a high-end control amplifier and preamplifier produced from 1980 to 1982 as the centerpiece of Kenwood’s L-07 series. Designed to pair with the L-07M monoblock amplifiers, it sits above the L-05C in the lineup and represents the peak of Kenwood’s analog engineering in the early 1980s. This unit combines ultra-low distortion, wide frequency response, and exceptional build quality, featuring a solid aluminum front panel and copper-plated chassis.
Specifications
| Year of Production | 1980–1982 |
| Power Specifications | 150W per channel into 8Ω (stereo), 300W into 4Ω (stereo) |
| Impedance | 4–16Ω |
| Power consumption | 25W |
| Dimensions | 440 x 130 x 390 mm (W x H x D) |
| Weight | 12.5 kg |
| Frequency Response | 2Hz–200kHz (+0, -1dB) |
| Total Harmonic Distortion | 0.002% |
| Signal-to-Noise Ratio | 110dB |
| Input Sensitivity/Impedance | Phono MC: 0.1mV/100 ohms; Phono MM: 2.5mV/47k ohms; Tuner, Aux, Tape: 150mV/50k ohms |
| Maximum Input Level (1kHz) | Phono MC: 12mV; Phono MM: 300mV |
| Output Level/Impedance | Rec Out: 150mV/1k ohm; Pre Out: 1.5V/50 ohms |
| Tone Control Range | ±10dB at 50Hz and 20kHz |
| Subsonic Filter | 15Hz, -12dB/oct |
| High Filter | 7kHz, -6dB/oct |
| Sensitivity | Unknown |
Design
The L 07C II is a fully discrete, dual-mono preamplifier with separate power supplies for left and right channels. It uses direct-coupled circuitry and a toroidal power transformer, housed in a copper-plated chassis with a solid aluminum front panel. Key features include a sophisticated moving coil head amplifier with selectable gain and impedance, gold-plated connectors, massive heat sinks, and DC power amplifier design. The proprietary motorized volume control is known to develop noise over time and may require replacement if damaged.
Context
As the preamplifier in Kenwood’s ultimate L-07 series, the L 07C II was engineered to compete with top-tier Japanese high-end audio equipment of the early 1980s, including models from Accuphase and Luxman. It was designed specifically to match the L-07M monoblock power amplifiers, forming a flagship system for audiophiles seeking the highest fidelity.
Sound Signature
Exceptionally clean, transparent, and detailed with excellent dynamics, wide soundstage, and precise imaging. It has a neutral tonality with tight bass control and extended highs. Reviewers praised its silent background and dynamic range, and owners note its build quality surpasses most modern high-end components.
Market
Current market value ranges from $800 to $1,500 depending on condition and originality, with fully restored units commanding over $3,000. Common issues include aging capacitors in the power supply and relay circuits, potentiometer noise, relay contact oxidation, and rare transistor failures due to age. The unit requires a skilled technician for servicing. Original rack handles and feet are often missing and difficult to source.
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