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Pure class A single-ended amplifier
The AMP3300R is a class A amplifier that features an extremely pure single-ended circuit with one voltage amplifier stage and one current amplifier stage that handle all music signal processing. The AMP3300R overcame the inefficient and extremely low output, which earlier class A amplifiers had, by combining the high-quality class A amplification with the Load Effect Free (LEF) circuit that avoids various sources of nonlinearities.
CEC's original LEF circuit
The AMP3300R features CEC's unique Load Effect Free (LEF) circuit to completely avoid all factors that result in deterioration of sound quality. The LEF circuit makes possible pleasing and detailed playback as well as high efticiency. Every amplifier should be a perfect voltage source in theory, while the current into the speaker is likely out of phase in relation to the voltage. The phase relation varies with the frequency, and it is even dynamically moving. NFB amplifiers are sensitive to this matter, specifically to the dynamic changes. The LEF's current control stage is not linked to the signal voltage, and just checks the current requirement that depends on the speaker load without knowing about the phase relation to the voltage. This phase independent operation is an important reason for the obvious drive ability as well as sound quality. The AMP3300R also has an automatic bias adjust function for stable signal processlng.
Fully balanced signal processing circuit
The AMP3300R adopts a full-balanced circuit design to achieve extremely high-speed and low-distortion signal transmission. Unbalanced input is converted to a balanced signal in the very first stage of the amplifier with no deterioration of sound quality, resulting in a fully balanced output signal. In addition, the left and right signals are processed in circuits divided to two different layers to ensure channel separation and a high-level stereo image.
IGM volume control
The Intelligent Gain Management (IGM) system is applied to minimize signal loss during volume adjustment. Sound level is adjusted by controlling the amplifier gain itself with a knob on the front panel. The input signal is not degraded by any mechanical volume resistor or CMOS device. As a result of this, Iowest noise, Iow distortion and highest dynamic performance has been achieved .
When continuous clipping is detected, the volume level is reduced automatically. In case of overheating, the unit is completely shut down. After cooling down, it turns on automatically.
|Specificatii||Rate output 64W+64W(8Ω)
Frequency response 0.5Hz-200kHz/±1dB
S/N ratio 102dB
Gain XLR : 22dB(max volume)
RCA : 28dB(max volume)
Input terminals balanced XLR x 1
unbalanced RCA x 4
Output terminals TAPE rec.(RCA) x 1
Speaker x 1
Power supply AC 120/230VAC
60/50Hz (specified on the rear panel)
Power consumption Min.32W
Dimensions approx.435(W) x 350(D) x 102(H)mm
(include heatsink,leg & knob)
Accessories Remote controller, AC power cord, owner`s manual
Color Black or Silver
|Tip Echipament||Solid State|