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Stereophile Class A Recommended Component
Hybrid Integrated Amplifier born from the UNICO amplifier.
With it we want achieve the goal of improve the nominal out-put power arriving to 130 W on 8 ohm, and improve the extension in frequency.
For achieve that we have double out-put (now we have 4 MOS-FET per channel), we have increase the capability of the filter and more power on driver stages.
This can permitted double the capability of current out-put, of the amplifier, so it can easily work at lower loud impedance value. In the same time we improve the realibility, thanks to more distribution of power consumption.
Another improvement is the placement of the power capacitors and MOS-FET they are at minimum distance.
The drivers stages were modified, we using in it a transistors circuits instead of single transistors, this improve the frequency response, the speed and linear of driver. We use the same driver used for the UNICO 200, where the problem of pilot the power MOS-FET are more.
The in-put stage is the same of the UNICO, used the double triode and a stage of communication
voltage-current with bipolar transistor.
Technical characteristics
OUTPUT POWER:(20 - 20000Hz/8Ω) 140 W, (20 - 20000Hz/4Ω) 250 W
OUTPUT STAGE: SYMMETRICAL COMPLEMENTARY STAGE WITH TWO PAIRS OF POWER
MOSFETS PER CHANNEL
OUTPUT STAGE BIAS: DYNAMIC CLASS A
OUTPUT CONNECTORS: 4 + 4 FOR BI-WIRING
INPUT STAGE: TRIODE
VOLUME CONTROL: MOTORIZED POTENTIOMETER, IR REMOTE CONTROLLED
BANDWIDTH: 2Hz - 100kHz at -0.5 dB
OUTPUT IMPEDANCE: 2 - 8 Ohm
DAMPING FACTOR: >50
INPUT SENSIBILITY: 220 mV
INPUT IMPEDANCE: 47kΩ // 47pF
INPUTS: 4 LINE, 1 PHONO RIAA
OUTPUTS: 1 TAPE
VALVES: 2 x ECC82 (12AU7)
MAX POWER CONSUMPTION: 500W
DIMENSIONS (w x d x h): 17.2x13.4x5.28 inch
NET WEIGHT: 36.30 Ibs
PHONO STAGE
BANDWIDTH: 20 - 20000Hz ± 0.1 dB
INPUT IMPEDANCE: MM 47kΩ // 220 pF, MC 100Ω // 440 pF
GAIN ADJUSTMENT: +10 dB
MAX INPUT: 120 mV @ IkHz
GAIN: MM 40 dB + 10 dB MC 50 dB + 10 dB
THD: 0,09% @ MM, 5 mV, IkHz
Not available for shipment into markets supported by an Authorized Unison Research Dealer. |
