The DS Audio Grand Master System is a flagship optical cartridge and dual-chassis equalizer set that redefines analog playback technology. The system features an optical cartridge with channel-independent LEDs and photo-detectors—boosting output voltage to 70mV for a dramatically lower noise floor—paired with a ultra-lightweight 99.9% pure beryllium shading plate, a solid diamond cantilever, and a MicroRidge stylus. Completing the set is a massive two-chassis equalizer unit with a dedicated external power supply, utilizing three high-capacity transformers, custom film capacitors, and over 5.3 million µF of total capacitance. The equalizer offers single-ended RCA and balanced XLR outputs along with six selectable low-frequency cut-off points for optimal system integration.
| Input impedance | RCA 120 Ω / XLR 120 Ω |
|---|---|
| Weight | 25,1 kg (jednotka ekvalizéra), 29,8 kg (napájacia jednotka) |
| Output Voltage | 700 mV (1 kHz) |
| Dimensions | Š 45,2 cm × V 15,2 cm × H 48,6 cm (každá jednotka) |
| Pre amp input impedance | viac ako 10 kΩ |
| Channel separation | viac ako 27 dB (1 kHz) |
| Signal output | Fotoelektrický prevod (Photo-electric Conversion) |
| Output signal level | viac ako 70 mV |
| Body material | Ultra dural |
| Cantilever holder material | Nerezová oceľ (Nerez) |
| Needle pressure | 2,0 g – 2,2 g (odporúčaný 2,1 g) |
| Stylus | Micro Ridge |
| Cantilever | Diamant |
| Input terminal | 3× RCA terminál, 3× XLR terminál |
The Japanese company DS Audio is a true pioneer in the field of modern vinyl record playback. As a specialist division of the development company Digital Stream Corporation, it brings to market unique optical phono cartridges and specialised equalisers. Unlike traditional MM and MC systems, which generate a signal through the movement of a magnet or coil within a magnetic field, DS Audio’s optical cartridges detect the movement of the stylus by measuring changes in the shadow and brightness of an infrared LED and photodiodes. As a result, there is no magnetic resistance, allowing the stylus to move freely, smoothly and with exceptional precision along the record groove. The system’s moving mass is extremely low, resulting in a radical reduction in noise, zero magnetic distortion and a clean, native analogue signal with a vast dynamic range.
DS Audio’s optical technology operates on the principle of amplitude proportionality, achieving an excellent signal-to-noise ratio, a solid bass foundation and incredible detail. The brand’s comprehensive portfolio ranges from more affordable systems right up to the absolute reference class. The company also supplies specially developed phono equalisers for its cartridges, as well as innovative accessories, including ionisers to remove static charge and stylus cleaning systems. DS Audio products are designed for discerning vinyl enthusiasts and audiophiles seeking maximum clarity, dynamics and the definitive technological solution for the analogue signal chain.
Manufacturer information (GPSR)
Manufacturer
Digital Stream Corporation
4-50-40, Kamitsuruma-Honcho, Minami-ku, Sagamihara Kanagawa, 252-0318 Japan