TRIO KA-7300 (1975) - Pure Natural Sound

 

More than four decades later, the Trio / Kenwood KA-7300 remains a highly sought-after vintage amplifier. Its audiophile-grade design, dual power supplies, and warm, natural sound make it a favorite among collectors and enthusiasts of classic Japanese hi-fi equipment. The Trio KA-7300 integrated amplifier (also sold under the Kenwood brand in some regions) was designed in 1975 with one clear goal: to reproduce music with absolute naturalness and precision. Built with independent left and right power supplies, the KA-7300 delivers a sharp, stable sound image that remains free of distortion—even when handling powerful signal inputs. Each instrument and vocal is positioned exactly as the recording engineer intended, creating a lifelike and emotional listening experience. Advanced Circuit Technology: Trio’s engineers developed a minimalist circuit design that preserves the purity of the music: Direct-Connect ICL Equalizer for clean and accurate phono playback, OCL Power Amplifier delivering smooth, dynamic power. Tone Control with Tone Defeat Circuit, reducing unnecessary elements that could degrade sound quality. With no unnecessary frills, the KA-7300 amplifier focuses entirely on musicality, clarity, and natural sound reproduction—qualities still admired by audiophiles today.

Specifications:

Power Amplifier Section:

Output: 65W + 65W (20Hz–20kHz, both channels, 8Ω)

Total Harmonic Distortion: 0.1% (rated output), 0.04% (1W, 20Hz–20kHz)

Signal-to-Noise Ratio: 110dB

Preamplifier Section:

Phono Input Sensitivity/Impedance: 2.5mV / 50kΩ (S/N 76dB at 5mV input)

Tuner/AUX Input: 150mV / 50kΩ (S/N 90dB)

Maximum Phono Input: 210mVrms

RIAA Equalization Deviation: ±0.3dB

General:

Dimensions: 430 (W) × 149 (H) × 376 (D) mm

Weight: 16kg

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