The Bittner 4Xe power amplifier is available in 2 models, the 4X 1200e and 4X 2000e (with 4 x 1200 watt and 4 x 2000 watts @ 4 ohms respectively),
The Bittner 4Xi power amplifier is available in 2 models, the 4X 1200i and 4X 2000i (with 4 x 1200 watt and 4 x 2000 watts @ 4 ohms respectively),