Sovtek EL84 Pair

Had a fail in a power tube in a blues junior 3 after years of use with the stock tubes. Consider I am not changing tubes for any search for a different response or search of a tone in mind. Decided to buy these as they are pre matched plugged straight in no issues work really well. I cant say if they change the sound at all but I did reach for the bass knob and felt the need to add a bit more I am using a telecaster never the less they look and feel quality product and so far I am happy with them. Lets see if they last for years like the stock ones did. So in summary you cant go wrong for the money and the amp still sounds good after the install. Whats not to like consider though I am no cork sniffer in search of the golden imaginary tone I believe most of it is in the fingers anyway followed by the pick ups, nut and bridge material of the said guitar.

After many years of light use, I decided to replace the original EL84's Groove Tubes in my Fender Blues Junior Tweed by these matched pair of Sovteks. I think these are the cheapest or one of the cheapest EL84 pairs I've found at Thomman, but I was not disappointed in any way. I could not notice much of a difference in sound at low bedroom levels, which I did not necessarily want/expect. Nevertheless, I feel more confident taking the amp to gigs now and I kept the old original tubes as spares.

Order processing by Thomann and delivery were fast as usual, and the tubes were super secure and arrived intact. I can definitely recommend this product.

My Peavy Classic 50 needed new tubes after 15 years of use. After visiting a lot of relevant sites and reading a lot of threads in forums, I decided to go for the long trusted Sovtek EL84. My amp uses 4 of them, so I bought 2 pairs (need to change all 4). I decided to risk and change the tubes myself; the fact is that they were not matched, so they might not work or might need to take them to an expert to check the bias.
Anyway, I was lucky enough not to have any problems. The tubes matched just fine and really transformed the old trusted tweed with the 2 blue marvels. These tubes were meant to offer a robust, well-rounded tone with excellent clarity and definition, especially in the midrange, add warmth and smoothness, enhancing the amp's natural response and providing a tighter low-end with rich harmonics. And so they did! While keeping the character of the amp (great clean sound, really responding to the volume knob of your guitar, great for stacking pedals), the lead channel was truly transformed! In combination with the presence knob, I can reach great sounds usually met in more modern, hi-gain amps. The harmonics are so rich, that even without the use of reverb or other pedals, my guitars sound awesome (Fender Strat Lonestar, Vintage V58 JD, Harley Benton Fusion-T HH Roasted SSP, Ibanez AS73) in every context (blues, rock, heavy). A great choice for the output stage of your amp.

I have used these tubes to replace power amp tubes in a AC15 style amp. The set i had before started making noise/crackles. These give the amp a little more "thump" and a bigger bottom end "warmer" sound. However it did not alter the high end responce so apart from a bolder/warmer sound they are transparent.
I have not noticed extra noise or other artifacts. I have not driven my power amp section into overdrive so i cant say what for sound these have when the amp is fully turned up (too loud for where i play)

So all by all i would say these are a good replacement for a overly bright (cheap/tiny sounding) or dull sounding amp.

I had to buy sovtek along with per-amp jj tubes because i couldn't find jj el84 at thomann. anyway, the shipment was fast as always and the packing is good although the shipping box was too big for few tubes (6).
I put replaced the power tubes with sovtek and the per-amp with JJ. and the sound was not as impressive. i did change one of the JJ (V2) position back to the Chinese stock that came with the ac15c1 vox and the sound was better.
after that i decided to put the Chinese el84 back in the amp. just for the sake of comparison. and the result was that the sovyek had slightly lower output power than the stock Chinese, but the sound is well shaped and with nice harmonic. whereas the Chinese had the sound and distortion going anywhere without any precision.