KECES S4: Preamplifier with phono stage for DS Audio optical cartridges

Taiwanese company KECES has introduced the world's first pre-amplifier equipped with a phono stage for optical cartridges from DS Audio. In addition, the new product is equipped with a conventional phono stage for working with moving magnet (MM) and moving coil (MC) heads.

The KECES S4 preamplifier uses a balanced circuit topology with zero feedback. Designed in a fully balanced concept, the S4 preamplifier offers a wide range of balanced (XLR) and unbalanced (RCA) inputs and corresponding outputs.

In addition, the KECES S4 preamplifier has a high-quality headphone amplifier, which can also be connected via a balanced interface. The device comes with an infrared remote control in a completely metal case.

KECES S4 specs:

• Inputs: MM/MC x 1 / Optical x 1 / Linear RCA x 1 / Balanced XLR x 2
• Input impedance:
• MC: 56 ohms/100 ohms/220 ohms/470 ohms/47 kohms
• MM: 47 kOhm
• OPT: more than 10 kOhm
• RCA/ XLR: 170 kOhm
• Outputs: RCA x 2 / XLR x 1 / XLR-4pin for headphones
• THD : MM <0.02% / MC < 0.05% / OPT <0.04% / RCA <0.0015% / XLR <0.0015%
• Signal to noise ratio : MM – 78dB / MC – 70dB / Optical – 75dB / RCA – 110dB / XLR – 110dB
• Gain : MM – 52dB / MC – 72dB / OPT – 32dB / RCA/XLR – 20dB
• Preamp Dimensions (W x H x D): 300 x 66 x 279
• Power supply dimensions (W x H x D): 300 x 66 x 279
• Weight: 3.5 kg (preamp), 4.5 kg (power supply)

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