The "TA-274A" is a completely made-to-order model, in which the base of the "TA-274B" rectifier tube released in May 2012 has been changed to a 4-pin UX base.

The 4-pin UX base has been newly manufactured so that it can be used with amplifiers equipped with UX sockets, making it a bipolar tube for rectification that users of WestarnElectric amplifiers of the past and others can also enjoy.

As with the "TA-300B" output amplifier tube and "TA-274B" rectifier tube, we have paid particular attention to parts, processing, vacuum, and quality control to achieve a highly reliable, high-precision vacuum tube that lives up to its name as the "only domestic audio vacuum tube manufacturer.

This product is made to order and will be delivered in 2 weeks to 1 month after receiving the order.

Specifications

Type：Dipolar tube

Item：TA-274A

Type：Direct-heating bipolar tube

Filament voltage/current: 5V/2A AC

Maximum plate voltage (RMS): 660V/plate

Maximum DC output current: 225mA

Maximum transient current: 2.5A within 20 ms

Peak plate current: 700mA per plate