State-of-the-Art Analog and Digital Domains for Natural Music Reproduction
REX DAC demonstrates how lifelike and involving digital playback can be when done to the nines. This reference-setting instrument’s audiophile credentials arise from state-of-the-art engineering in both the digital and analog domains. The digital design, from Andreas Koch, runs at an extraordinarily high clock rate to allow for the gentlest and least-intrusive filter at its output. The analog design, from Victor Khomenko, is a high-current vacuum-tube output stage that alone would exceed the performance of most reference tube preamplifiers. The marriage of these designs conveys the most natural, analog-like rendition of digital recordings.
Zero Negative Feedback for Supreme Purity, Six 6C19 Vacuum Tubes
REX DAC’s analog output stage follows the Balanced Audio Technology purist approach of using zero negative feedback to achieve the desired goals of wide bandwidth and circuit linearity. No buffers or followers are used anywhere in the signal path. REX DAC also features a high-current output stage with a total of six 6C19 vacuum tubes. One pair of 6C19 tubes serves as current sources for the power supply of the elegant, trademarked Unistage design. Just as in BAT’s REX II preamplifier, REX DAC employs amorphous-core transformers for output coupling. You’ll find no capacitors in the signal path.
Proprietary DAC Module Runs at an Ultra-High Clock Rate, Uses Custom Filters
BAT’s goal for REX DAC was to create the most compellingly natural reproduction of the musical source. Ringing from filters that provide a perceived albeit false excitement in musical playback have no place in REX DAC’s design. Instead, the proprietary DAC module runs at an ultra-high clock rate while employing custom filters to reconstruct the analog signal in a way that specifically complements REX DAC’s unique high-current vacuum-tube output stage.
REX DAC
DAC
| Inputs | AES, 2 Coaxial, 2 Toslink, and USB | Outputs | 2 XLR |
| Resolution | 24-bit/384kHz PCM, 4x DSD (11.2896MHz) | Global Feedback | no |
| Output Impedance | 1K | Power Consumption | 160VA |
| Dimensions (WHD) Inches | 19" x 5.75" x 15.5" | Weight | 32 Lbs |
| Tube Complement | 6 6C19 |
REX DAC Press Release: Introducing the REX DAC
REX DAC USB Windows Driver (ASIO)
