Coda Stereo Amplifier CSX , 330Wx2

Selling my Coda CSX purchase new directly from Coda March 2012. Almost 3 years left on transferable factory warranty. Working flawlessly. Rated 9/10 due to age. Extremely well built unit. Clean and fast sound can drive just about any load. This is a late production CSX with gold plated circuit boards. MSRP was $6,000. These are a great value at used prices. Original packaging, manual and power cord included.
Add 3% for Paypal.

From the manual:
Rated Power: 330W x 2 into 8 Ohm Load, 660W into 4 Ohm Load
2 Ohm Load Stable
Class A operation to 25W
Bandwidth: 5 Hz to 100 kHz
Distortion .04% from 10Hz to 20kHz driven into 4 to 8 ohm loads
Amplifier Gain: 26db
Maximum Current: >150 Amperes peak
Noise: >-100 dBA referenced to 1 Volt output
Slew Rate: >50 Volts per microsecond
Damping Factor: >150
Input Impedance: 50k Ohms unbalanced, 1k Ohms balanced
Power Supply: 3.0 kVA toroidal transformer, high speed rectifiers and 80,000uf capacitance.
Dimensions: 17" W x 14" D x 5.5" H
Weight: 65

The Coda Amplifier CSX features a wide range of design topologies and components ported from the both the the broad lineage and the most recent advances in the Coda products and design topologies, which include:

• State of the art high current stereo amplifier in an elegant hand-crafted chassis
• Fully balanced design utilizing a discrete FET differential input, VMOSFET voltage gain stage DC coupled to an ultra wideband bipolar output stage
• Coda's “Precision Bias” technique yields a seamless transition from Class A operation regardless of the complexity of the load impedance.
• Very high linear damping
• AC-coupled unbalanced input and true DC-coupled balanced input
• Gold plated FR-4 glass epoxy printed circuit boards
• Wideband, fully-regulated power supply with EMI and RFI line ltering and low impedance filter capacitor array
• Left and right channel status indicators
• WBT Topline Binding Posts and RCA Connectors
• Carefully selected and evaluated audiophile grade parts, rigorously tested using both objective & subjective techniques
• Enhanced styling with graphite anodize & stainless steel accents to match Coda 05X, 06X and CLX preamplifiers

The CSX is a stereo version of the Monoblock CX, which was originally based on the design and form factor of the Amplifier CS. The CSX design is identical to the Amplifier CX, except that the 36 output devices are split between the 2 channels of the CSX amplifier.The power supplies take a very direct approach to high performance. A custom 3.0kVA encased, shielded toroidal transformer with independent windings and IXYS high speed rectifiers and a total of 80,000uf supply capacitance with very low ESR and inductance is used.

Differential JFET inputs and a new Vertical MOSFET voltage gain stage provide exceptional rejection of noise and contributes to the inherent DC stability of the circuit. This allows direct coupling at the Balanced Input without servo circuitry. The front end is designed to provide a slew rate of 50 V/us without entering Class B operation as is common in many other designs. The amplifier's excellent high frequency design insures superlative linear operation.

This latest generation Coda output stage design is capable of producing peak currents in excess of 125 peak Amperes with a degree of linearity and speed which is not matched by other designs when producing only a fraction of this massive amount of current. The bias section is designed to produce a precision transition with no abrupt changes in distortion or output impedance. This “Precision Bias” technique yields seamless performance regardless of the complexity of the load impedance. With such linearity and bandwidth, only 6db of feedback is used to maintain damping factor while permitting the minimal value custom emitter resistors to provide current limiting only under such extreme conditions that would exceed the output stages high current capabilities. Tne advantage of this is a high degree of immunity from interactions with complex speaker loads or cables.

The sonic and aesthetic value of the CSX versus the CS amplifier is unquestionable. As a complement to the CX, CLX, or 05X, the X components provide a rare sonic synergy and represent some of our best efforts to date and provide a clear example of what we mean by our simple mission statement to provide "Fidelity. Performance. Value."