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Taga Harmony HTA-25b Vacuum Tube Upgrade Kit

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  • Premium Upgrade Vacuum Tube Kit for the Taga Harmony HTA 25B Amplifier
  • Rugged Military Spec Vacuum Tubes – Choice of Grades
  • Transform your Taga Amplifier with Quality assured – All our Vacuum Tubes are fully electronically tested in-House
  • Plug in and Play – Full Instructions included
  • Audiophile Quality by AudioZomba

Taga Harmony HTA 25B Vacuum Tube Upgrade Kit:

We offer a Complete Set of Four Taga Harmony HTA 25B Tubes: A Matched Pair of military spec 6P1 Tube Equivalents – 6P1P-ev with a choice of standard, premium or Elite 6N1 Matched Pair Vacuum Tubes.

Our Tube are direct drop-in Upgrades and therefore suitable for many Taga, Eufonika, Nobsound, Liston and Douk Audio models.

Because our Vacuum Tubes are fully Bench tested here in the UK, they are guaranteed No leaks or shorts.

The Power Vacuum Tubes:

You will receive a matched Pair of our  6P1 Taga Harmony HTA 25B Tube Equivalents – 6P1P. These are Russian Military Manufacture, 6P1P-ev USSR c.1970/80s so have a long Life expectancy of 5000 hrs. They also feature Nickel Plated pins and gold grid.

The Pre-Amplifier Section Tubes:

In addition, you can choose between 3 Grades of Pre-Amplifier Tubes. They all come with free anti-vibration dampers:

Choose from:

A matched Pair of Standard 6N1P Russian Military Manufacture, USSR c.1970/80s Life expectancy: 2000 hrs.


A matched Pair of Premium 6N1P-EV Russian Military, USSR c.1970/80s so have a long Life expectancy of 5000 hrs. Also, they feature Nickel Plated pins plus gold grid.

A very good sound Upgrade! Expect improved tighter and deeper bass. Open mid-range and detailed treble plus better timing and overall cohesion.


A Matched Pair of Elite 6N1P-v extremely rare c.1968 – 1974 Russian Military, USSR – have a long Life expectancy of 5000 hrs. Very high rare earth metal content for astounding even and odd harmonics, Also, they feature Nickel Plated pins plus gold grid. These are the cream of the crop.

The Pre-amp section tubes come with a free pair of BS310 Anti-Vibration Dampers.

Full fitting instructions are included.

If you are unsure about your Amplifier’s requirements you can download a .pdf User Manual for free here

Never buy these tubes from an untrusted source. Vintage tubes can cause serious damage untested. We check all valves extensively within the UK. Next Day Dispatch. No lengthy returns or customs duties! *

*Always check for the correct vacuum tube in your Manufacturer’s User Manual.

Fitting the wrong tubes can be dangerous, can damage your amplifier and can invalidate your 30-Day Warranty


More Info

Additional information

Weight 0.26 kg

Standard, Premium, Elite

Returns & Delivery

We offer a No-Quibble 30 -Day Return & Refund on all our Products. Please refer to our Return & Refund Policy for full details.

We aim to ship next Working Day by your chosen Postal Service. See our Shipping Policy for further details.


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