... with stock opamps (TLE2141 Class A*2, BUF634U*2, dummy adapter*2)- High output power, 600mW+600mW into 32Ω- High quality ... - Measures 55*24*92mm, and weighs 156g- Comes with power adapter, leather pouch, rubber feet, connection cable, warranty card ... 2, OPA604*2, TLE2141 Class A*2, BUF634P WB*2, BUF634U*2, Transistor BUF*2, Dummy adapter*4) iBasso P4 Warbler 3CH/4CH Portable Headphone Amp amplifier ...