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CA-903 Dual Mono Preamplifier |
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Dual Mono:
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A number of manufacturers will go rhapsodic about the virtues of their mono block power amplifiers. "If you want true channel separation, the signals have to be totally separate to eliminate crosstalk," they will tell you. But what about preamplifier? Shouldn't everything they say about dual mono with power amps be even truer with the lower level signal of a preamp? So, why don't they do it? Well, the answer is pretty simple. They ought to, but it is expensive. |
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At Canary We Did It: |
In our CA-903 flagship preamplifier, we even separate the left and right channels of the line stage (CA-903-L) and the power supply (CA-903-P) into four separated chassis. The circuitry components used in the CA-903 are carefully chosen and hand soldered on the military grade epoxy circuit boards. Only pure silver/Teflon coaxial cables were used for routing between the jacks and the gold plated ELMA rotary switch. The volume control being used is a 24-positions stepped attenuator hand built by our engineers. Even the DC power cables used to connect the line stages to the power supplies were built by our engineers to meet our standard.
The CA-903 is truly a dual mono left and right separated preamplifier that offers a true channel separation. Delivers high transparency, wide dynamics soundstage, and three-dimensional imaging, the CA-803 is simply the finest preamplifier one could desire. |
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What's new about the CA-903: |
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A modified tube rectifier power supplies (CA-903-P) with the use of an extra 5Y3 rectifier tube.
Hovland MusiCaps® are used in key circuit locations.
A modified circuitry with the use of upgraded power transformers and chokes.
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| Specifications for CA-903
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Input Impedance: |
50,000 Ohms min, 100,000 Ohms max. |
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Output Impedance: |
1,200 Ohms |
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Maximum Gain: |
12.3 dB |
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Frequency Response: |
+/- 0.04 dB from 5 Hz to 118,500 Hz |
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Hum and Noise: |
90 dB |
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Maximum Output Voltage before clipping: |
43.9 Volts |
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Total Harmonic Distortion: |
< 0.01% |
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Power Consumption: |
78 Watts (true RMS) |
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Tube Complement (per channel) (CA-903-L): |
1 x 12AX7 / ECC83
1 x 12AU7 / ECC82 |
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Tube Complement (per channel) (CA-903-P): |
1 x EF86
1 x 12BH7
1 x 5Y3 |
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Dimensions (per channel): |
CA-903-L: 11" W x 15" D x 4.75" H
CA-903-P: 11" W x 15" D x 4.75"H |
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Net Weight (per channel): |
CA-903-L: 14 lbs
CA-903-P: 20 lbs |
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Warranty: |
3 Years Parts and Labor |
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Specifications subject to change without notice. |
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