Pathos Logos Mk II Tube Hybrid Integrated Amplifier
Logos is a hybrid amplifier delivering 110 W per channel into 8 ohms, and 220W into 4 ohms. It uses ECC88 preamp tubes, and an end-stage class A / B Mosfet. A strongly polarized, fully balanced signal up to the tubes allows listeners to take full advantage of balanced sources such as the Pathos Digit and Pathos Endorphin. The volume control uses purely resistive analog circuitry with digital control and input and output impedance constant, lamellar transformer resin and encapsulated to zero dispersions, brightness display adjustable and all functions remote controlled.
Pathos issues new models only when there is a substantial and meaningful new idea to offer its loyal customers. And so after more than 10 years since the introduction of the integrated Logos, Pathos presents the MKII.
The new Logos uses an increased voltage of anodic polarization of the tubes to obtain greater linearity, and thus a general improvement of the sound, in particular, its consistency and definition. Stabilized power supply for preamp tube, and a more accurate collocation of electrolytic capacitors throughout the signal path (and in particular close to each mosfet) allow a valuable reserve of "quick energy". This means better dynamics, detail, and sense of rhythm.
Now, volume levels can be stored for each input, and there's a standby function from the remote control. An optional high-quality 24bit-192Khz DAC offers 2 S/PDIF digital inputs, and 1 USB input. A new Hall effect sensor circuit offers protection from short circuits and overloads.
Type: Integrated stereo amplifier, hybrid technology.
Preamplifier stage: Tube (2 x 6922 ECC88), class A
Final stage: Mosfet, class AB
Output power: 2 x 110 W RMS @ 8 ohm (Both channels driven.)
Frequency response: 5 Hz - 140 kHz ± 0.5 dB
Max input voltage: 6 V RMS
Input sensitivity: 500 mV RMS (39 dB Gain)
Input impedance: 32 KOhm unbalanced, 20 KOhm balanced
Output polarity: Non- inverting, balanced pin 2 +
Volume regulator: Burr Brown PGA2310 (100 steps)
Damping Factor: 360 @ 8 Ohm
THD: 0.02% @ 1 W, 0.2% @ 110 W
S/N Ratio: >90 dB
Power requirements: 200 W @ 100 WPC / 130W @ zero volume < 0.5 W @ standby
Analogue line inputs: 2 x balanced XLR, 5 x RCA
Outputs: 1 x pre out stereo, 1 x sub out mono
Digital inputs (Optional HiDac board required): 1 x USB port type "B", 2 x S/PDIF coaxial
Dimensions: 420mm (D) x 430mm (W) x 170mm (H)
Packed dimensions: 600mm (D) x 600mm (W) x 350mm (H)
Weight (net / packed): 61.7 lb (28Kg) / 66.1 (30Kg)