My Perfect Headphone System (for now)
hd650 from Senheisser 3322 from Darkvoice (Mullard) Carat Ruby from Carat It's a mix of German+Chinese+Korean. Ruby is powered by a dry battery to ensure the clean power. This DAC is probably one thing I can improve. But so far I'm very satisfied. Updated (January 2011): Styleaudio has Ruby 2. Here are some changes. Key is USB Controller now can accept 96kHz/24 bit Carat-Ruby Key Spec 1. MAIN DAC : BURR-BROWN PCM1792 - 24-Bit 192-kHz Sampling Advanced-Segment Audio Stereo DAC - Dynamic Range: 127 dB / THD+N: 0.0004% - 8x Oversampling Digital Filter 2. DIGITAL COTROLLER : CIRRUS LOGIC CS8416 - 32kHz to 192kHz Sample Frequency Range - Low-Jitter Clock Recovery 3. USB COTROLLER : BURR-BROWN PCM2707 - FULL SPEED TRANCIEVER(REAL AUDIO 1.1) - 32kHz ~ 48 kHz/ 16BIT DELTA-SIGMA STEREO 4. OPAMP : TOTAL 8PCS(DIP TYPE) - I/V : TEXAS INSTRUMENTS NE5534 × 4PCS - OUTPUT : ANALOG DEVICE AD817 × 2PCS - HEADPHONE : BURR-BROWN OPA2134 × 2PCS Carat-Ruby 2 Key Spec 1. MA