Audio Research CL-120 Amplifiers (Pair)

Why Buy New is pleased to offer for sale these utterly incredible Audio Research CL-120 Amplifiers (Pair).

These include their original boxes and packaging - Please note that these units will be delivered on a pallet.

These have been tested and are in full working order. These amplifiers are being sold with a 3 month warranty.

The cosmetic condition is excellent with a small minor chip and scrape marks (please see last 3 images).

FREE national courier delivery.

Why Buy... from us?
Because all of our items go through a full inspection, get serviced (if required), PAT tested for electrical safety, deep cleaned and all come with a warranty. We are 100% committed to customer care and are always on hand pre or post-delivery for technical help and advice.

The Classic 120 monaural power amplifier represents the latest refinement by Audio Research engineers of the Classic-series circuit topology.

In a true dual mono format offering more performance than the Classic 60, at less cost than the Classic 150.

The Classic 120 puts out 110 watts of power in 4, 8 or 16 ohm loads. And, like other models in this family, it features a triode-configured output stage while retaining the partial cathode coupling that all Audio Research Vacuum tube and hybrid amplifiers enjoy. Triode operation, in conjunction with partial cathode coupling, results in rich lifelike musician performance. With a sense of power and control that go beyond the 120 watt rating, thanks to more than 415 joules of energy storage and new low-loss output transformers.

In addition, triode operation offers more reliable operation during the life of the output tubes. Because the screen (accelerating) grids are connected to the plates (anodes), the normal stress of conventional pentode operation is not present. Longer tube life can be expected as an additional bonus to improved performance. Service life of internal components (including tubes) is further enhanced by quiet, efficient fan cooling. 

The Classic 120 monoblock power amplifier is a hybrid, using precision semiconductors in the input stage along with two 6FQ7 driver tubes (thereby reducing the threat of damage in the event of a tube “arc,” without the need for costly protection circuit.

The Classic 120 is also constructed to the same rigorous standards as the other more costly Audio Research equipment. Close inspection reveals the same heavy-duty, precision printed wiring boards, audiophile-grade capacitors and costly point-to-point litzwire. In addition, the classic 120 incorporates a circuit which readjusted the tube bias regulator automatically for power line voltage changes. You don’t have to be concerned about whether the bias is set correctly for your line voltage. And, a sophisticated servo circuit continuously monitors and maintains DC balance in the output tubes. The result is an amplifier that maintains its stunning powers of resolution without tweaking or tinkering. (When the output tubes need replacing, a simple bias adjustment is all that’s required to restore the original performance.) 

The Classic 120 is an excellent match for a wide range of high-resolution loudspeakers. It has more than enough output to reach lifelike sound pressure levels in even large real-world listening rooms. Thanks to its incredible power of resolution, the classic 120 yields more information, as well as a more satisfying musical experience, than conventional amplifiers are capable of. 

Specifications:

• Power output:
  - 110 watts minimum continuous at 16 ohms from 20Hz to 20kHz with less than 1.0% total harmonic distortion (typically below .005% at 1 watt)
  - Approximate actual power available at ‘clipping’: 115 watts (1kHz) (Note than actual power output is dependent upon both line voltage and “condition” ie: if power line has high distortion, maximum power will be affected adversely, although from a listening standpoint this is not very critical.)
  
• Power bandwidth: (-3dB Points) - 10Hz to 80 kHz
  
• Input Sensitivity: .65V RMS for rated output
  
• Input Impedance: 100K Ohms
  
• Output Regulation: Approximately 0.2dB 16 ohm load to open circuit (Damping factor approximately 45)
  
• Overall Negative Feedback: 21dB
  
• Slew Rate: 17 Volts/microsecond
  
• Rise Time: 2.0 microseconds
  
• Hum & Noise: Less than 1.0mV RMS - 92dB below rated output (20kHz bandwidth unweighted, input shorted)
  
• Power Supply Energy Storage: Approximately 415 joules
  
• Dimensions: 19” (48cm) W (Standard rack panel) x 8 ¾” (22cm) H x 15 ¾” (40cm) D (front panel back). Handled extend 1 ⅝” (4.1cm) forward of the front panel. Output connectors extend 1” behind rear panel.
  
• Weight: 27.7 KG