ELEKIT TU-879s Elekit Vacuum Tube Power Amplifier with Spare Vacuum Tubes and Cover. Home Audio Amplifiers

Elekit Vacuum Tube Power Amplifier TU-879S (no warranty) with Vintage Vacuum Tubes + Velvet Cover

I received a fully functional unit in 2021, received advice from Elekit personnel, and made the following modifications:
1. Resoldering and cleaning of the circuit board. Minor intermittent noise that occurred irregularly disappeared.
2. Replaced cathode bypass capacitors (C3, C4, C9, C10) with ultra-low ESR capacitors. It is noted that replacing them with “CAP ALUM HYBRID 100UF 20% 35V TH【EEH-AZF1V101】, suitable for a 35V model, will greatly improve the sound quality with outstanding cost-effectiveness. The new kits often use these components extensively.
3. Replaced power tubes with new EL34 pair purchased from Garrett. It is mentioned that while the sound may lose a bit of thickness, the high frequencies become exceptionally beautiful.
4. Replaced driver tubes with Vintage Toshiba 12AX7.
5. Replaced output terminals with gold-plated ones.
6. Added a surge killer.

In my opinion, the bandwidth widened and transparency increased significantly with modification 3. Modification 4 had a tremendous effect compared to replacing the power tubes.

The previous usage time is unknown, but it has been used for approximately 100-200 hours since 2021. I am letting it go for organization purposes.

Included in the package are the main unit, Elehamo EL34 pair, one Vintage Toshiba 12AX7, along with the following:
1. Original assembly manual (with annotations), which is advantageous for purchasing spare parts due to numbered markings.
2. Elehamo 6L6GC pair included in the kit (note: one tube produces minor noise, so it is safer not to use it).
3. Sobtek 12AX7 included in the kit.
4. Vintage Matsushita 6CA7 pair (I personally think the sound is excellent. Take caution as one guide pin is missing from one tube). Due to aging, I recommend using Elehamo EL34 for regular use.
5. Four removed capacitors.
6. Velvet cover specially made by Okayama Cover (note: do not use when the unit is turned on or hot).

I have tested the unit before listing, and I think it performs exceptionally. The two-stage amplification with a simple circuit and lack of unnecessary components make it stand out. However, it is old and unforeseen incidents may occur during transport. Please understand that there is no warranty in case of any issues and consider this before purchase.

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