Elekit TU-8850 Single Ended Tube Amp Kit
Elekit TU-8850 Single Ended Tube Amp Kit
The new TU-8850 power amp from Elekit is a 'tube roller's dream', an amplifier kit which allows users to try various types of octal base (US8P) pentode and major beam tubes. Get more from the music you love with this exciting new Elekit design.
In this amplifier, the bias condition is kept at an optimal level for the output tubes installed without a complicated bias adjustment by "Active Automatic Bias Adjustment System". In addition, the amplifier is equipped with a power mode switch on the top panel. Selecting from 3 operation modes, HIGH, MID and LOW, users can try various types of output tubes, small to medium tubes, such as 6L6 to bigger ones like KT150, KT170, etc.
Output tubes operation mode switching system
For pentode and beam tubes, Triode connection is accomplished by connecting the screen grid to the plate. This amplifier has an operation mode switch on the top panel so that users can easily enjoy the sound difference in 2 different modes, UL (Ultra Linear) and Triode modes.
Gain switching jumpers
This is a power amplifier typically used in conjunction with a preamplifier. However, with the TU-8850 gain switching is enabled by moving a jumper socket position and it is possible to connect the amplifier directly to a LINE output of a sound source device without a preamplifier in between.
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Ask about our perspex front cover (see attached images) if you'd like to display the beauty of your soldering. Exclusive to Secret Chord Analogue.
This option supplies the TU-8850 kit with standard issue output transformers.
The kit is supplied with KT88 power tubes as well as 12AU7 signal tubes. Power tubes may be varied upon request.
Required tube complement:
Signal tube: 2 x 12AU7 (ECC82, 6189)
Power tube choices for the three power modes:
High: 6550, KT88, KT90, KT120, KT150, KT170, etc
Mid: 6L6GD, 5881, 7581, KT66, KT77, EL34 (6CA7), etc
Low: 6L6, 6L6G, 6L6GB, WE350, etc
Tubes of HIGH mode group can be used in MID and LOW modes, and those of MID group can be used in LOW mode. In other words, tubes may be moved down the power groupings to a lower grade, but not upwards.
