Western Electric

91E

The Western Electric Type 91E is a Class A, single-ended triode (SET) integrated amplifier using a matched pair of Western Electric 300B output tubes and two ECC81 preamplifier tubes. Its Steered Current Source technology delivers 2 × 20 watts into 4- or 8-ohm loads at 10% THD, with interchangeable 4-, 8-, or 16-ohm output-transformer blocks and zero negative feedback. The amplifier provides MM/MC phono, CD, Bluetooth, six audio inputs, headphone output, auto-bias, and a preamplifier-only configuration with balanced XLR output.