TAD 6L6GCM-STR Redbase Premium Selected Matched Pair


TAD 6L6GCM-STR Redbase Premium Selected Matched Pair is a superb choice of 6L6.

Availability: 3 in stock (can be backordered)

The TAD 6L6GCM-STR REDBASE is the latest 6L6GC designed and built to be the best 6L6 type tube ever manufactured.
In terms of sound, the TAD 6L6GCM-STR REDBASE produces the powerful but always defined bass response known from the legendary American built NOS RCA 6L6GC valves, with clear, unobtrusive and yet transparent highs. In every setting, the TAD 6L6GCM-STR REDBASE responds directly and with noticeable dynamics, from buttery soft and warm to powerful and brutal without losing details or depth.
This makes the TAD 6L6GCM-STR an effective upgrade for every amplifier using 6L6GC or 5881 valves. Can also replace EL37, CV586, VT115A, 6L6GA, 6L6GB, 6L6WGB, 6L6WGC, STR-440, STR-454, 6p3p, 6p3s, 6p3s-e, etc.
The TAD 6L6GCM-STR REDBASE combines the structural advantages of the robust American Philips/Sylvania 6L6GC, also known as MESA 6L6GC-STR415, and the sound quality of the legendary RCA 6L6GC tubes.
Silky highs, deep bass and lots of headroom recommend the TAD 6L6GCM-STR REDBASE for lively cleans and as a powerful broadband power amplifier for multi-channel amps.
The new TAD Redbase series combines the latest manufacturing technologies with traditional design and flawless quality. The TAD Redbase series is exclusively built on a TAD production line, optimized especially for the TAD Redbase series. At TAD in Germany, the tubes of the STR series receive a special, additional burn-in treatment and formatting process to prepare for TAD Premium-Matching, which optimizes the quality of the cathode emission and opens up an exceptionally detailed sound structure.
The Classic 6L6 Sound – Excellent Tone and Maximum Lifetime!
Q: When does a power tube become a Premium Selected power tube?
A: All power tubes labeled Premium Selected have passed the following tests:
–      Plate Current (PC) and Amplification (TC)
–      Low Noise Test
–      Microphonic Test
–      Sonic Tests
–      Shock Tests
–      Listening Tests
–      Shorts & Leakage Tests
Premium RT-Matching of Power Tubes
Our Premium Matching is an exact matching of power tubes with identical Plate Current (PC) and Transconductance (TC). These valves boast a 180 day warranty.

2 reviews for TAD 6L6GCM-STR Redbase Premium Selected Matched Pair

  1. nigel p. (verified owner)

    Great service … valves replaced in my Blackstar Artist 30 and are working fine. Thanks.

  2. Graham Milnes (verified owner)

    I had a few issues, but I was still able to use 6L6 valves:
    1. The valves are taller than the old RCA ones that were replaced.
    2. The red base is a smaller diameter than the old RCA ones. This makes the retaining clips much less effective.
    3. The matching wasn’t great. With 470V B+ and 470R screen grid resistors, there was about 10% difference in the anode plate (anode) current.
    4. The valves have much lower plate current than the RCA ones. The plate power dissipation was near 40% (12W) causing severe crossover distortion before clipping. I had to add a resistor in the bias circuit to reduce the -ve bias voltage so that the plate power dissipation is near 60% (18W) for each valve.
    The Fender Bassman 50 Head amplifier is now working well. Note: This amplifier only has a bias share adjustment, there is no adjustment for the overall bias voltage up and down.
    It would be helpful if your website provided data sheets for the valves. Dimensions for the base and the glass tube would be very useful. I’ve had problems in the past with JJ valves being too tall, I didn’t know other manufacturers make them taller. Some Fender amplifiers have a metal guard over the output valves, where this becomes an issue. I hope this feedback is useful.

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