Respecto a la calidad de los dac de los CA, el Topaz CD5, implementa el WM8725 y el CD10, el 8761:

WM8725 is a high-performance stereo DAC designed for use in portable audio equipment, video CD players and similar applications. It comprises selectable normal or I2S compatible serial data interfaces for 16 to 24-bit digital inputs, high performance digital filters, and sigma-delta output DACs, achieving an excellent 99dB signal-to-noise performance.
The device is available in a 14-pin SO package that offers selectable mute and de-emphasis functions using a minimum of external components.


Stereo DAC with input sampling from 8kHz to 96kHz
Sigma-delta design with 64x oversampling

99dB SNR performance

Right justified or I2S input data format

System clock 256fs or 384fs

Additional mute feature

Supply range 3V to 5V

14-pin SOIC package

The WM8761 is a high performance stereo DAC designed for audio applications such as DVD, home theatre systems, and digital TV. The WM8761 supports data input word lengths from 16 to 24-bits and sampling rates up to 192kHz. The WM8726 consists of a serial interface port, digital interpolation filters, multi-bit sigma delta modulators and stereo DAC in a 14-pin SOIC package.

The WM8761 has a hardware control interface for selection of audio data interface format, mute and de-emphasis. The WM8761 supports I2S, right Justified or DSP interfaces.

The WM8761 is an ideal device to interface to AC-3, DTS, and MPEG audio decoders for surround sound applications, or for use in DVD players, including supporting the implementation of 2 channels at 192kHz for high-end DVD-Audio applications.

Stereo DAC

100dB SNR (‘A’ weighted @ 48kHz)

-90dB THD

DAC Sampling Frequency: 8kHz – 192kHz


Pin Selectable Audio Data Interface Format: I2S, 16-24 Bit Right Justified or DSP
2.7V - 5.5V Supply Operation

14-pin SOIC Package

Pin Compatible with WM8725 and WM8726

Ambos están considerados como "low cost".