Digital converter unit Philips dac-960 (tda1541a)

Ultra high fidelity, dual 16-bit D/A converters. Philips engineers have aimed for the ultimate in digital connversion and have achieved it with the Philips DAC 960. By using their reference standard dual, 16-bit chip plus optocoupling between the digital filter and converter, the Philips DAC 960 achieves almost pristine signal darity. Three optocouplers link the specially selected digital filter to the D/A converter for absolutely noise-free digital signal transfer. Precision engineered 3rd order analog filters provide meticulous final grooming for the output signal. Signal-to-noise ratio has been improved to >101 dB along with complete suppression of passband ripple. The Philips DAC 960 can be used to upgrade an older CD player to the finest Philips quality, expanding a system needing more inputs, or as an audiophile quality digital pre amplifier. More than a digital-to-analog converter, this is a reference standard DAC for the truly discerning consumer.

Three separate power supplies with 3 individual transformers. Philips has taken state-of-the-art technology from the sound studio and incorporated it into the Philips DAC 960. Three completely separate power supplies, each with its own magnetically screened transformer, drive the digital input/output circuitry, the D/A converter and the analog circuits. Each system is isolated, eliminating any interference or crosstalk between circuits. In addiition, the analog circuits, which are sensitive to power supply changes, use a very efficient, heavy duty torodial transformer. Maximum separation is ensured for the very best digital reproduction.

DAT Ready. Automatically handles three sampling frequencies. Whether it's from a compact disc or digital audio tape, the Philips DAC 960 features an automatic sampling frequency autolock for either 32, 44.1 or 48 kHz. No matter which source is used, the Philips DAC 960 automatically locks onto the proper sampling frequency for absolute accuracy. No need for manual adjustment and the frequency used is clearly displayed on the front of the unit. The signal then travels to reference standard dual. 16-bit DAC with 4x oversampling, guaranteeing the finest digital sound.

Optical digital input for purest, noise-free digital sound. Along with optocoupling between the digital filter and converter chip, the Philips DAC 960 features a Direct Optical input. The supplied fiber optic cable is compatible with Philips CD players and most other digital optical sources. For those who demand the best, the Philips DAC 960's optical digital input provides a truly pure signal with no possibility of interference from electromagnetic or electrostatic sources. A pure, noise-free digital signal is routed to the converter input, analog filters and pre amplifier. The Direct Optical Input allows the consumer to be ready for the next generation of digital peripherals including CD-I and CD-ROM.

Balanced, direct and variable outputs for top performance. Philips brings even more technology from the sound studio into the Philips DAC 960 by using the same output transformers found on Philips professional CD players for the balanced outputs. The unit's direct output eliminates all possible noise at the analog amplifier input. The varialble output maKes it possibk to set the exact required at the power amp, enabling the Philips DAC 960 to act as a futuristic pre-amp for the digital audio systems of the 1990s

Philips DAC 960 features includes:

Ultra high fidelity D/A converters optically coupled to Philips state of the art digital filters
3 Separate power supplies with 3 individual transformers
DAT Ready. (Handles 3 multisampling frequencies) from any digital source (CD, DAT)
Optical digital input with supplied fiber optic cable
2 electronic digital gold-plated inputs also available
Absolute phase inverter control ensure proper imaging with any source
Balanced, direct and variable outputs with 2-stage muting
Output transformers are those used in Philips professional CD players
Direct outputs eliminate all possible noise at analog amplifier input
Variable Output allows exact setting at power amplifier enabling DAC 960 to act as audiophile pre-amp
Heavy duty, die cast chassis weighing over 4 pounds
Solid, shock absorbing feet to eliminate vibration and resonance
All components selected for their audiophile characteristics
Copper Heat sinks ensure proper heat conduction
Large capacity ceramic powder capacitors for top audio performance
High quality headphone amplifier with volume control

Philips DAC 960 Specifications:

Typical Audio Performance (20-20,000 Hz unless stated otherwise)
Frequency Range, fixed and variable: 2-20,000 Hz
Frequency Range, balanced: 20-20,000 Hz
Amplitude linearity: ±.01 dB
Phase Linearity: ±.2°
Signal-to-Noise Ratio: >101dB
Dynamic Range: >96 dB
Channel Separation: >100 dB (1 kHz)
THD (Total Harmonic Distortion incl noise): <.0015% (1kHz)
Intermodulation: -90dB (at max. output level)
Ultrasonic Noise Reduction (>24.1kHz): >60dB

System 1, 1 x RCA: .5 v pop, 75 ohms
System 2, 1 x RCA: .5 v pop, 75 ohms
Optical System, 1 x Tos-Link Monitor In, 1 x RCA: .5 v pop, 75 ohms

Fixed, 2 x RCA: 2 v RMS at 100 ohms
Load Impedance: > 10K ohms
Variable, 2 x RCA: 4 v RMS at 100 ohms
Load Impedance: > 10K ohms
Balanced Output, 2 x XLR: 2 v RMS at 100 ohms
Load Impedance (Balanced): 600 ohms
Load Impedance (Unbalanced): 600-50K ohms
Headphone : 8-1,000 ohms
Monitor Out, 1 x RCA: .5 v pop, 75 ohms

Headphone Amplifier Performance
(20-20,000 Hz unless stated otherwise)
Output Impedance: 220 ohms
Load Impedance Range: 8-lK ohms
Output Power: 30 mW at 32 ohms, 50 mW at 600 ohms
Frequency Range: 20-20,000 Hz .1 dB
Channel Balance: .5 dB
Signal-to-Noise Ratio: >93dB
Dynamic Range: >90dB
THD (Total Harmonic Distortion incl. noise at 600 ohms): <.003%
Intermodulation at 600 ohms: <.003%
Channel Separation at 600 ohms: 75dB

Power Supply
Voltage: 120 v AC
Power Consumption: 35W

Material/Finish: Metal/semi-matte black lacquered
Dimensions (WxHxD): 16.8 x 3.44 x 13.28 inches
Weight: 18.7 pounds

1 - Power supply unit for the digital section
2 - Two separate transformers: one for the digital section and one for the digital / analog converter
3 - Transformator for the analog section
4 - 1x 16bit digital / analog converter
5 - 2 high capacity ELNA capacitors
6 - 2 symmetrical XLR outputs for Studio purpose