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TAD-C600 Preamplifier

The C600’s quality results from a fundamental reassessment of all aspects of electrical and mechanical design. It creates reference quality that etches a new name in the history of TAD. From the meticulous left/right symmetrical design, dual mono construction and fully balanced circuitry, it reaches a new peak of performance. Faithful in every respect to our TAD philosophy of the closest approach to the original artistic intent, the TAD C600 Reference Series Preamp possesses unprecedented reproduction capability. The rich world concealed in each and every musical performance is conveyed with unrivalled accuracy and fidelity, true to the original musical performance.

THE REFERENCE SERIES C600 PREAMPLIFIER

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UNPARALLELED TRANSPARENCY AND MUSICAL FIDELITY

The C600’s quality results from a fundamental reassessment of all aspects of electrical and mechanical design. It creates reference quality that etches a new name in the history of TAD. From the meticulous left/right symmetrical design, dual mono construction and fully balanced circuitry, it reaches a new peak of performance. Faithful in every respect to our TAD philosophy of the closest approach to the original artistic intent, the TAD C600 Reference Series Preamp possesses unprecedented reproduction capability. The rich world concealed in each and every musical performance is conveyed with unrivalled accuracy and fidelity, true to the original musical performance.


TECHNOLOGY

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MACHINED CHASSIS

33mm thick and weighing 15kg, the sub-chassis is fabricated by precision processing of pure aluminum ingots, achieving a high level of vibration control that drastically minimizes the impact of vibration from speakers or other sources, as well providing a stable mechanical ground. All the additional chassis parts are machined to the same high accuracy as the sub-chassis, serving to reduce the impact of vibration and external noise while contributing to the reproduction of music with ultra high purity and faithfulness to the input signal. The spike-shaped three-point support feet ensure mechanical stability on any support surface. These comprehensive measures combine to free the C600 from undue external influences and allow it to achieve its full potential.

DUAL ENCLOSURE

In order to eliminate any influence from the power supply to the amplification circuit and signal routing, the C600 uses a dual enclosure configuration that separates the amplifier from the power supply. This minimizes the effects of noise caused by vibration or magnetic flux leakage from the power supply transformer. A power amplifier-grade 400VA rated toroidal transformer provides a degree of precision that allows accurate signal transmission, even during large signal levels and fast signal fluctuations. Together with a fully balanced circuit design that eliminates unnecessary noise currents, the result is the ultimate in low noise performance.


CONTROL

The controls, LED display and illumination operate via a circuit method based on direct current, minimizing their impact on sound quality. The control circuit wiring and power supply are housed inside a shield that centrally divides the enclosure. This prevents interference with the circuit boards and further improves left/right signal separation.

HIGH PRECISION

TAD’s new ladder-resistance switching electronic volume control circuit achieves an absolute channel level difference of 0.1dB or less, even at attenuations of more than 100dB. The distortion produced by the circuit is only 0.0005% (@1Vrms input). The impedance seen at the input and output terminals is independent of volume setting, minimizing interaction with the signal circuitry and maximizing fidelity of the sound. The use of fully independent left and right electronic volume control circuits ensures accurate auditory lateralization and sound field reconstruction. The input selector switch and volume control shaft bearing incorporate a precision ball bearing with a diameter of 41mm. These features provide the highly precise operating feel that you expect from TAD.

SIMPLIFICATION

Based on the TAD concept that “a signal route exemplified by the absolute minimum of functions results in the most accurate and high quality sound,” the C600 has an extremely simple circuit configuration. Following input signal volume adjustment by the electronic volume control, the circuit configuration utilizes only one voltage amplification stage. Equipping each of the two line outputs with their own dedicated amplifier circuits eliminates the output circuit signal branching as well as interference from connected equipment that can cause sound quality deterioration. In order to transmit music signals as simply and accurately as possible, the monitor switch has been eliminated due to its potential effect on sound quality. Furthermore, the audio pass-through function sets the gain to unity, without introducing additional switching circuitry, to maintain maximum signal purity.

EXTREME LINK FUNCTION

TAD’s Extreme Link function is capable of synchronizing multiple C600s together in a master/slave configuration to allow for further system configurations of up to six channels. This lets you assemble high-end multi-channel audio or home theater systems.

SENSITIVITY ADJUSTMENT

The C600 allows input sensitivity to be set independently for each input terminal, so the general sound level does not vary when you switch between different sources.

SPECIFICATIONS
Model No.

TAD-C600

Major Functions

Mute

Display Off

Mode setting: fine volume adjustment, volume display mode switching,

L/R balance adjustment, input level setting, auto power down setting

Input Terminals

balanced input × 3, unbalanced input × 3

Output Terminals

line: balanced output × 2, unbalanced output × 2

recording: balanced output × 1, unbalanced output × 1

Rated Output Voltage

balanced output 1.5 V, unbalanced output 0.75 V

Maximum Output Voltage

balanced output 20 Vrms, unbalanced output 10 Vrms

Rated Distortion

0.0015% (balanced output, 1.6V, 1kHz)

SN Ratio

120 dB (IHF-A, short circuit)

Frequency Responce

10 Hz~100 kHz(‒1 dB)

Gain

12dB

Maximum Allowable Input Voltage (-40dB)

20V (balanced), 10V (unbalanced)

Power Supply Voltage

AC 120 V, 60 Hz (USA)

AC 220 V to 240 V, 50 Hz /60 Hz (Europe, Asia)

Power Consumption

52W

Power Consumption During Standby

0.5W or less

Dimensions

main amplifier: 450 mm (W) × 150 mm (H) × 440 mm (D)

Power supply: 220mm (W) × 185 mm (H) × 430 mm (D)

Weight

main amplifier: 29 kg

power supply unit: 15 kg

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