Pathos Kratos Tube Hybrid Integrated Amplifier

A class-A Tung-Sol ECC803 input stage meets a 200 Wpc MOSFET output stage

In Greek mythology, Kratos is the god of strength, might, and power. The Pathos Kratos is based on Pathos’ famous hybrid circuit featuring tubes in the preamp stage, and a MOSFET final stage, offering 200 W per channel. 

The design electrically separates the pre and power stages, with the preamplification circuit working in in pure class-A. The Tung-Sol ECC803S tubes offer a warm, deep, dynamic sound. The final MOSFET stage in class AB is strongly polarized in class A, and drives any loudspeaker with power and grace. 

Kratos is also headphone amplifier with dedicated circuitry (2 W @ 32 Ω). The amp can be upgraded with an optional DAC card. 

Specifications

Type: Hybrid stereo amplifier, fully balanced.
Preamplifier stage: tubes, class A, 2 x TungSol ECC803S
Final stage: MOSFET, bridge configuration, class AB

Output power: 2 x 200 W RMS @ 8 Ω, 2 x 350 W RMS @ 4 Ω
Max input voltage: 5 V RMS
Input sensitivity: 0.7 V RMS
Input impedance: 47K ohm
Pre out gain: 6 dB
Gain: 36 dB

Connections
Analogue line inputs: 2 x balanced XLR, 5 x RCA, 1 x balanced XLR HT bypass
Optional inputs: HiDac Mk2, Phono stage RIAA for MM/MC
Outputs: 1 x pre out stereo unbalanced RCA, 1 x pre out stereo balanced XLR

Headphone Specifications
Output power: 3.3 W @ 16 Ω , 2 W @ 32 Ω
Max output level: 10 V RMS
Dimensions: 16.9″ (D) x 20.8″ (W) x 7.67″ (H)
Weight: 88 lb (40 kg)