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What is stereo?




There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.



H.H. Scott '59





Adcom GFA-535 power amp

Adcom GFA-535 represents the most advanced thinking in audio amplifier design. At 60 watts per channel, the GFA-535 offers an exceptional value; superior performance at a reasonable price.

Some of the outstanding features of this amplifier are:

60 watts per channel, 20 Hz - 20 kHz, into an 8 Ω  load with both channels driven with less than 0,09% Total Harmonic Distortion.

The ability to drive low impedance loads

Output for 2 pairs of speakers

Two additional AC outlets for a CD Player, Tuner, or other audio components up to 100 watts maximum

Instantaneous Distortion Alert which indicates when distortion products are above the 1% level.

The instantaneous Distortion Alert is a unique distortion detection circuit which reads all forms of distortion - T.H.D., Intermodulation DIstortion, Slew Induced, and DC-offset, peak LEDs, one per channel, will glow when distortion is above 1% regardless of the load impedance or reactance in use, the LEDs may occasionally flicker under high volume listening. It they glow brightly or are on most of the time that you are listening, you are overdriving your equipment and should turn down your volume control.

The GFA-535 is a truly significant contribution to the advancement of sound technology. To ensure that the quality of construction is on par with the quality of the sonics, (a much neglected area in many other amplifiers) the GFA-535 has been carefully developed with computer controlled metal fabrication techniques that maintain 0,005 of an inch tolerances throughout. Full electrical inspection of each and every circuit board, sub-assembly , as well as the finished amplifier, provide a mechanically and sonically superior product for your enjoyment. At the time of its design, no other product on the market which offered the design and construction quality of the GFA-535 at anything close to its selling price.

 


Specifications

Continuous Power Output (both channels, 20 Hz - 20 kHz, less than 0,09% T.H.D.):

60 watts/channel at 8 Ω

100 watts/channel at 4 Ω

Signal-to-Noise Ratio (A-weighted, Full output):  better than 106 dB

Input Impedance:  22 k Ω

Input Sensitivity

For rated Output :  1,0 Volt

For 1 watt :  130 mV

Damping Factor (20 Hz - 20 kHz):  better than 130

Dynamic Headroom (at 4 Ω ):  3 dB

Available Voltage:  120 V at 60 Hz, 220 V at 50 Hz

Dimensions (W x H x D):  432 x 83 x 318 mm (17" x 3-1/4" x 12-1/2")

Shipping Weight:  10 kg (22 lbs)


 

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