Pathos InPol Heritage Tube Hybrid Integrated Amplifier

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  • $14,995.00
  • Regular price $14,995.00

Pathos InPol Heritage Tube Hybrid Integrated Amplifier

InPol (Inseguitore Pompa Lineare - Linear Pump Follower) is a Pathos patented system that allows for much greater output in pure class-A. This fully balanced circuit uses a single solid-state component in follower configuration, with a high-current gain and voltage gain.

The tube amplifier amplifies the input signal voltage, and InPol supplies the current to drive the loudspeakers without any further amplification. The technology allows an increase in the theoretical output in pure class-A of between 25 % and 50 %. Together with a low output impedance and a double InPol circuit, the amplifier offers a high damping factor for immense control over the loudspeaker drivers. 

The digital bias/gain set technology with intelligent control is entrusted to the same microprocessor which regulates the volume, thus guaranteeing the performance of the amplifier itself and its ability to drive the loudspeakers efficiently. 


Type: Pure class A, double INPOL technology, fully balanced digital bias/gain set technology
Tubes: 2 x ECC803S Tung-Sol
2 X 6H30 Sovtek
Output power: 2 x 80 W @ 8 ohm
Frequency response: 2 Hz – 200 kHz ± 0.5 db
Max input voltage: 10 VRMS
Input sensitivity: 780 mVRMS
Input impedance: 20,000 ohm
Volume regulator: Purely resistive relays
THD: 0.1% @ 80 W
S/N Ratio: > 100 dB
Gain: 33 db unbalanced, 39 db balanced
Analog inputs: 2 x XLR, 4 x RCA line inputs
Digital inputs (only with optional HiDac Mk2 board): 1 x USB B , 1 x S/PDIF coaxial, 1 x S/PDIF optical
Outputs: 1 x pre out RCA, 1 x pre out XLR. Four levels of output gain, phase selection
Dimensions (WDH): 17.7" x 21.8" X 9"
Net Weight: 127.8 lb (58 kg)

White/Black and White/Padouk finishes are a special order. Approximate lead-time 6-8 weeks.