Power Amplifier ( Used)

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Made In Japan


Kenwood C1 Pre-Amplifier

Description

A full-control unit, the Basic C1 is fully up to the high standards set by its partner, the Basic M1 power amplifier. It contributes clarity, smoothness and the ability to process the most varied and dynamic program material with accuracy.
Now that high quality MC cartridges are becoming more affordable, the freedom to select a cartridge to suit the needs of the music is an important advantage in a preamplifier. The Basic C1 adjusts to the preferred cartridge automatically, according to the input selector that is activated.
This system is realized through a new high gain, high stability phono equalizer amplifier that has a dual-input function. Its input stage employs two high-gain FET's while the output is a new low noise IC.
By changing the negative feedback value and impedance automatically, this new equalizer amplifier allows cartridge selection without any reconnecting inconvenience. In addition, optimum noise and distortion ratings are maintained for both types of cartridge.
Many preamplifier designs are disappointing when it comes to actual listening tests, in spite of apparently good performance data. But the Basic C1 preamplifier is one model that will shine out in any such test. S/N ratios and RIAA accuracy are, of course, excellent.
But it is the ability of the preamplifier to process signals transparently and smoothly, without any trace of harshness or coloration, that makes it outstanding. It can provide a wealth of musical fine detail especially in the very high frequency range, which is often a disaster zone for preamplifiers. Yet it can handle highly complex and heavy dynamic music cleanly, too.
With a super low noise buffer amplifier to feed it, the tone control circuit is a negative feedback, capacitor resistor type that produces no gain and provides excellent tonal quality and low distortion. At the center detent position, totally flat response is obtained.
At a point 30dB below maximum vol¬ume level, a 100Hz signal can be boosted from zero dB to 9dB for fine tonal balancing when listening at average to low volume levels.
To prevent shock noise when the control amplifier is turned on or off, a relay circuit at the output releases the signal only after all circuits are stabilized.
The Basic C1 is equipped with every control that you will need for the maximum enjoyment of every music source. There are two tape inputs (with independent circuits for each) and two tape monitors. Dubbing is accomplished from Tape A to Tape B, Aux and Tuner selectors and Phono MM and MC cartridge selectors, as well as Tape selectors, each have an LED indicator above them.
The control panel is simplicity itself, reflecting the clear thinking that exists at Kenwood about what control amplifier priorities really are. The panel is laid out for easy use. And inside, the same philosophy of simpler the better holds for the circuitry.

Specifications

Frequency response: 1Hz to 250kHz
Total harmonic distortion: 0.004%
Input sensitivity: 0.25mV (MC), 2.5mV (MM), 150mV (line)
Signal to noise ratio: 70dB (MC), 87dB (MM), 108dB (line)
Output: 1V (Pre out), 5V (Pre out Max)
Dimensions: 440 x 78 x 326mm
Weight: 4.2kg






Kenwood M1 Stereo Power Amplifier

Description
Unprecedented dynamic headroom, vanishing distortion and precision control of speaker cone excursion. These are some of the rewards of the new technology to be found in the Basic M1.
A startlingly simple design concept translates into a much sought after goal of higher power handling ability combined with low distortion and outstanding tonal quality. A patented Kenwood technology, the DLD power circuit brings together the best features of a top quality medium power amplifier and a high power amplifier, totally sidetracking their disadvantages. Thus, you can get the enormous power needed to amplify the most dynamic music signal peaks.
Simultaneously, you can hear the kind of smooth, evenly balanced tonal quality extending throughout the audible range you would normally expect only from a first rate medium power amplifier. There are no size, weight, heat or thermal instability problems. Dynamic peaks are
 handled easily and are so clearly perceptible they will satisfy the most hypercritical listener.
Highly reactive speaker loads and crest value music signals that exceed rated output are taken fully in stride by the Basic M1. This amplifier can comfortably handle the highest dynamic peaks, even at rated listening levels, and can operate fully with speaker impedances that fall as low as 2 ohms.
The amplifier is designed for a frequency response accurate to within +-3dB from 1 Hz to 300kHz, ensuring that all signals falling within the audible range are reproduced perfectly.


Specifications
Power output: 105 watts per channel into 8? (stereo)
Frequency response: 1Hz to 300kHz
Total harmonic distortion: 0.005%
Damping factor: 1000
Input sensitivity: 1V
Signal to noise ratio: 120dB
Speaker load impedance: 4? to 16?
Dimensions: 440 x 112 x 324mm
Weight: 9.1kg




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