Elekit Audio TU-8900 With Upgrades

This amp is an extremely elegant design. A totally new auto biasing power supply actively monitors load and bias levels and allows instant swapping of 300b/2A3 power tubes, identifying and matching bias and B+ without any required adjustments by the listener (see photos).  A new level of transparency is obtained from the included Lundahl LL2785C Amorphous Core output transformers, precision matched components including Takman/Dale resistors, Mundorf Coupling capacitors, Panasonic filtering capacitors and full matched tube set.   
 

Upgrades:

*Lundahl LL2785C C-Core output Transformers and custom mounting rail

*Gold Lion PX300B precision matched Power tubes

*Philco / Hammond match 12AU7a drivers

*Dale 1% precision matched power circuit resistors

*Matched Takman 1%REX Carbon audio circuit resistors

*Mundorf Supreme Capacitors

*Alps R27 Volume Control

Specifications:

●Tubes :300B (or 2A3) x 2pcs, 12AU7 (or 12BH7A) x 2pcs (Tubes included as specified)

●Specifications below are with the 300B+12AU7, with NFB, 8Ω loaded

●Rated output :8W+8W (300B) / 3.5W+3.5W (2A3) 

●Rated input : 1Vrms (300B) / 650mVrms (2A3)

●Residual noise : 15μV (IHF-A)

●Frequency response : 7Hz-90kHz (with NFB) / 12Hz-45kHz (Without NFB)

●Input impedance : 50kΩ

●Output impedance : 4-6.3Ω, 8-16Ω (SW on backside)

●Input terminal : LINE x 1

●Output terminal

Headphone terminal : 6.3mm headphone jack

Speaker output terminals (L/R channel) : Gold-plated screw type terminal (Banana plug usable)

●Power voltage: AC110-120V or AC220-240V 50/60Hz (3P inlet)

●Power consumption: 95W (300B) / 65W (2A3)

●Measurement: W356xH214xD320mm (including projections)

●Weight: Approx. 11.4kg (excluding a power cable)

With proper impedance matching and speaker sensitivity this amp is simply stunning. The amp runs with or without negative feedback by simply relocating a jumper under the top plate (“Non-NFB” mode intended for use without a preamp). It also incorporates an outstanding headphone amp with selectable input impedance (shown in photo).

This amp has been used very lightly, barely long enough to fully burn in with the included tubes. No issues whatsoever, dead silent, runs perfectly, professionally built by an electronics engineer who has built dozens of these kits and others. Cosmetically excellent, all original documentation and power cord included. *Purchase also includes brand new, original output transformers packed separately.

Comes with matched Classic Psvane 2A3 and matched Golden PX300B tubes, as well as RCA 12BH7A and Philco 12AU7A driver tubes. All tubes have been treated with care and have very low hours (~300hrs). Amp has been used in a very clean, smoke free, pet free home.
 

Stereophille review link below:

https://www.stereophile.com/content/gramophone-dreams-74-elekit-tu-8900-kit-amplifier

Shipping included in the asking price. Will arrive triple boxed and extremely well packed.  Will accept PayPal (FF), Transfer, or Personal Check. Only selling this wonderful amp and other equipment to pay medical bills! 

Thank You!