New Western Electric 91E tube amplifier with 300B tubes
The Western Electric 91E Integrated Amplifier operates in a single-ended design and is based on the 91A from the second half of the 20th century. The novelty was the first Western Electric amplifier in over 15 years. The model was announced back in 2019.
Most popular vacuum tubes in the world
The Western Electric 91E proprietary circuitry has more than doubled the power that can be drawn from a 300B end-tube in this mode – over 20 watts per channel. It controls a parallel DC power supply. Half of the AC is applied to the plate (anode) of the 300B, modulating the quiescent current.
Displacement control – automatic, microprocessor. The Western Electric 91E pre-stage contains two ECC81 tubes. All four lamps are displayed on the top panel. The amplifier provides for the replacement of the output transformers with a version with support for 4-ohm load.
From modern technologies Western Electric 91E received a Bluetooth module – a wireless audio input. Six more inputs (counting the preout) are RCA cables. In addition, the system has USB and LAN inputs. Western Electric 91E receives firmware updates over the network.
An infrared remote control is provided to control the novelty. The amplifier status is displayed on a dimmable color LCD.
Price and availability
The Western Electric 91E tube amplifier is already available in the US on pre-order for $12,500.
Western Electric 91E Specifications
|Weight||49lbs / 22.2 kg|
|Dimensions||18.9 x 15 x 11.1” / 48 x 38 x 28cm|
|Colors||Nickel, Gold, Black|
|Operating Voltage||100V / 115V / 230V / 50-60Hz|
|Power Consumption (Operation / Standby)||160W / 0.3W|
|Mains Fuse||2A slow-blow|
|Electron Tube Complement||One Matched Pair Western Electric 300B, 2x ECC81|
|Phono MM Sensitivity (10W / 4Ω)||0.75mV|
|Phono MC Sensitivity (10W / 4Ω)||70μV|
|CD Sensitivity (10W / 4Ω)||0.27V|
|CD Input Impedance||20 kOhms|
|Phono MM Input Impedance||47 kOhms | | 100 pF|
|SNR MM (10W / 4Ω, input 5mV)||83 dB(A)|
|SNR MC (10W / 4Ω, input 0.5mV)||73 dB(A)|
|SNR CD (10W / 4Ω, input 0.5V)||101 dB(A)|
|CD Frequency Response||15 Hz – 32 kHz (-3 dB)|
|Phono Frequency Response||30 Hz – 20 kHz (RIAA within +/- 0.5 dB)|
|Output Power / 4 Ω / THD 10%||2 x 20 watts|
|Output Power / 4 Ω / THD 5%||2 x 16 watts|
|Output Power / 4 Ω / THD 3%||2 x 14 watts|
|Output Power / 8 Ω / THD 10%||2 x 20 watts|
|Output Power / 8 Ω / THD 5%||2 x 16 watts|
|Output Power / 8 Ω / THD 3%||2 x 14 watts|
|BT* Codecs||BC, MP3, AAC, Fastream, APTX|
|BT* Sample Rate (adaptive)||Up to 96kHz / 16-bit|
|BT* frequency response||20 Hz – 20 kHz|