Descrizione

SPL Phonos Duo

SPL Phonos Duo expands the established SPL phono preamplifier Phonos with a pair of balanced stereo inputs and outputs.

Whether moving magnet (MM) or moving coil (MC) cartridge systems – the SPL VOLTAiR technology and the RIAA filter in the legendary Douglas-Self design form the fundament for an outstanding phono sound.

MC or MM ?
Moving coil cartridge systems are commonly regarded as the more audiophile systems, as they allow a faster and therefore a finer cartridge due to their low mass. They bring out the finest nuances of the record. Moreover, the output voltage of a moving coil cartridge system is extremely low at just a few hundred microvolts and is therefore more sensitive to noise and induced hum.

The very low output voltage makes preamplifier design a challenge, because it has to be pre-amplified extremely noise-free. With up to 70 dB preamplification, Phonos duo offers one of the most powerful phono preamplifiers for moving coil systems. In addiction, thanks to SPL 120V technology, Phonos duo amplifies extremely low-noise, linear and phase-locked.

Moving magnet cartridges, on the other hand, are more rugged and often less expensive.
The greater mass of the moving magnets causes more inertia, which results in less precise reading of the record. However, modern moving magnet systems also use neodymium magnets, which have a significantly lower mass. Moreover, such moving magnet systems can also keep up with some moving coil systems in terms of accuracy.

Capacitance plays a significant role with moving magnet cartridges. This means that the effects of cable capacitance (from the cartridge to the preamplifier) can‘t be ignored here. In conclusion, the capacity for moving magnet cartridges can therefore be set to six values on the Phonos duo to be optimally adapted to the system.

Specifications:

Analog Input & Output: RCA & XLR (balanced)

Input impedance (MM): 47 kΩ; (MC): switchable
Output impedance: 75 Ω
Frequency range: 10 Hz – 100 kHz
Crosstalk (1 kHz): -80 dBu

Moving Magnet (MM) Preamplifier

Amplification (Low):30 dB; (Med): 40 dB; (High): 50 dB
Capacitance (switchable): 12, 47, 100, 150, 220, 330 pF
Noise (A-weighted; 50 dB amplification): -82 dBu
Dynamic range (50 dB amplification): 132 dB

Moving Coil (MC) Preamplifier

Amplification (Low): 50 dB; (Med): 60; (High): 70
Impedance (switchable): 20 Ω, 50 Ω, 100 Ω, 220 Ω, 500 Ω, 1000 Ω
Noise (A-weighted, 70 dB amplification): -62 dBu
Dynamic range (70 dB amplification): 129 dB

Internal Linear Power Supply with Shielded Toroidal Transformer

Operating voltage for analog audio: +/- 60 V
Operating voltage for relays and LEDs: + 12 V

Mains Power Supply

Mains voltage (selectable, see fuse chamber): 230 V AC / 50; 115 V AC / 60 Hz
Fuse for 230 V: T 0.5 A
Power consumption: max. 30 VA
Stand-by power consumption: < 0.3 W

Dimensions & Weight

W x H x D: 278 x 57 x 300 mm
Unit weight: 3.2 kg; shipping weight (incl. packaging): 4.3 kg