The AD1852 is replaced with the higher quality CS4398 D/A chip. The OPA2604 at the high speed power supply has been replaced with the AD-08 for overall improvement in sound quality, and the 2 OPA2604 at the sound stage have been replaced with LT-1057 for improved accuracy, higher extension and better bass.
All 3 replaced 2604 op-amp's are also included should you want to revert back to them.
The DAC 2.5 is a high performance and reasonably priced audiophile grade stereo digital analog converter. You can use it to replace the built-in DAC portion of your existing digital audio sources (DVD or CD player) to upgrade the sound quality into audiophile level instantly. You connect your existing player's optical or coaxial digital output to the DAC and then use the DAC's analog RCA output to your amplifier. It's very simple and effective. It doesn't matter if you are an audiophile or just want to enjoy better quality music, this DAC is a great compliment to any rig.
The DAC 2.5 includes an optical and coaxial digital input. It applies the famous Cirrus Logic CS4398 & Analog Devices AD1852 chips as it's signal receiver. With the digital analog converter, the whole signal path is really 24bit/192kHz. The decoded signal is then passed to 3 pieces of Burr-Brown OPA2604 hi-quality op-amp chips for filtering and buffering.
The newly launched Zhaolu D2.5 advanced DAC/headphone amp is nearly a complete revamp of it’s predecessor, the ever popular D1.x series. The new front plate combines a black and a contour shaped silver aluminum. The front plate features headphone volume control, power switch, headphone output, input source switching and LED status indicators. The new D2.5 series houses an all new internal design: the new R type transformer, an added headphone (audio) input/output as well as fixed RCA audio output.
The headphone amplifier has been greatly improved from the headphone amplifier in the D1.x series offering the ability to drive even the toughest loads presented by headphones.
Features:
DAC Chip: Cirrus Logic CS4398 24-bit/192 kHz with advanced multi-bit Delta-Sigma architecture
OP Amps (for DAC output sections): Linear Technology LT1057 precision high-speed dual Op Amp
OP Amps (for Headphone Amp): Burr Brown OPA2604
Optical (Toslink) Digital Input
Coaxial Digital Input
Digital input switching
RCA analog output (bypasses volume control)
RCA analog output from headphone amplifier (volume controlled and can be used like preamp)
RCA analog input to headphone amplifier (bypasses DAC)
Volume control (headphone)
Mute on zero signal input
6.3mm Headphone Signal Output
Independent headphone amplifier (supports different headphone impedance)
Power-on delay and Power-off protection
Easy to upgrade and very mod-friendly (change op amps to suit your taste)
Audiophile-grade parts and components
Separate power supply to analog and digital circuits
High quality double-sided printed circuit board (PCB)
