The goals achieved in the DC-300 are those of a Laboratory Standard—heretofore unattainable in a power amplifier of modest price. New perfection is realized in the areas of distortion, noise, stability, self-protection, power output and economy. It is possible to obtain a monaural 70.7 v balanced output without a transformer.
Unlike ordinary AC-coupied amplifiers, the DC-300 exhibits a near perfect “transfer function’ —completely linear gain-bandwidth, excellent phase response and instantaneous overload recovery (even on non-symmetrical waveforms). The behavior of any load is not influenced by the negligible internal impedance.
A total of 38 discrete transistors, 2 differential (dual) transistors, 28 diodes and 6 zener diodes are utilized in the unique direct-coupled circuitry (patent pending). Self-protection is threefold—VI limiting, thermal breakers, and overall fusing of the 60-amp-rated output devices. A massive 1 KW power supply drives
the amp, and features quad-regulation of input stages.
When reproducing complex waveforms as in music, the total clarity and astonishing ease of the DC-300 is immediately apparent—even with “medium” transducers. Steady-state power output is prodigious—independent of waveform, with solid, linear response to DC. This amplifier most nearly approaches the Ideal—a “Straight Wire with Gain.”
Power output: 155 watts per channel into 8Ω (stereo), 310 watts into 16Ω (mono)
Frequency response: 1Hz to 20kHz
Total harmonic distortion: 0.05%
Damping factor: 750
Gain: 26.3 dB
Input sensitivity: 1.75V
Signal to noise ratio: 110dB
Speaker load impedance: 8Ω to 16Ω
Dimensions: 19 x 7 x 9.75 inches
Finish: satinized front panel, grey suede lexan insert
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