[Kevcleat]

I finally got my garage sale tubes tested out , thanks bigshutterbug !
I rolled in some EH 6L6's in place of my EH EL34's to compare . About as close to apples-to-apples as I can get .

I am asking if there is a tube that combines the characteristics of these two tubes ?
I like the warmth , body and bass of the EL34's and the top end , detail and air of the 6L6's . Is there something that would have all of these characteristics in one tube ?
Yes , I want it all !

Thank you

[FullRangeMan]

You could try listen 6CA7 or KT66.
Bass depends on the OPT size also.

[thetakeout]

Add 7581 to that list. 

[Tyson]

kt66.

[Mark Korda]

https://www.premierguitar.com/articles/22739-power-trip-a-guide-to-power-tubes-and-their-signature-sounds( Hi Kevcleat this might help) Mark Korda

[Carl V]

winged "C" el34.

[Freo-1]

I finally got my garage sale tubes tested out , thanks bigshutterbug !
I rolled in some EH 6L6's in place of my EH EL34's to compare . About as close to apples-to-apples as I can get .

I am asking if there is a tube that combines the characteristics of these two tubes ?
I like the warmth , body and bass of the EL34's and the top end , detail and air of the 6L6's . Is there something that would have all of these characteristics in one tube ?
Yes , I want it all !

Thank you

Look at the 807/1625 tube.  They are similar to the 6L6, but they have more overall power.  The tubes have excellent overall performance, with good bass, lifelike mids, and extended treble.   

[DaveC113]

Gold Lion KT77   

[galyons]

I am always amazed at the "opinions" with, apparently, no knowledge of the circuit in which a particular output tube is being utilized. Driver tubes often have more influence than power tubes. Architecture...SE, PSE, PP, negative feedback...so many variations that will impact the voicing of an amp, IMO, more than the output tube.  How 'bout Output Transfomers... coupling caps....??

Hopefully you get the picture. 

[DaveC113]

Hopefully you get the picture.

Wut? I plug tubes into my magic box and somehow music comes out, hur, hur... 

[luckyguy]

I like "Fat"  Sylvania vintage tubes after 40 years of tube rolling 4 different amps.  GL KT 77s are also nice.  Took me a while to get a closely matched set of Sylvanias.

[Colnagofan]

Gold Lion KT77   

That’s what I was thinking.

[Colnagofan]

winged "C" el34.

My favorite, but definitely an EL34 sound. I’d have to go with KT77 as the midpoint between EL34 and 6L6.

[onethousandanswers]

In terms of this class for new tubes, I like the Psvane EL34-PH and Shuguang Black Treasure 6CA7. For NOS, I like the Tesla EL34s (from what I've tried).

[lokie]

I'm also a fan of GL KT 77's. Nice overall tube.

[fredgarvin]

In my SEP circuit, the KT77 has more bass than the EL34 and the midrange is closer to the EL34 than anything I've tried. The 7581 has a more linear sound, similar but more 'body' than the 6L6. I would roll both in and see which you prefer.

[FullRangeMan]

Maybe this help, this shop inform some EL34 characteristics and sound quality on the guitarist mind point of view.
https://www.tubesandmore.com/search/node/el34?cats%5B0%5D=1&sort=price_low_to_high
[/quote]
This shop inform some EL34 characteristics and sound quality on the guitar amp pov.
Vacuum Tube - EL34B, Valve Art
SKU:    T-EL34B-VA   Item ID:    004851   Starting at: $13.15
Octal power tube (Max Plate Watts = 25W) EL34B(with shadow grid) is a high performance improved version of pentode EL34A to solve the problem of overheated No. 2 Grid. Maximum anode dissipation is 25W and output power of single tube is over 10W in A1 amplification mode. When used in AB1 mode, two tubes can output over 35W. It can substitute 6CA7.
==  == = = =  =
Vacuum Tube - E34L, JJ Electronics
SKU:  T-E34L-JJ   Item ID: 004827   Starting at: $13.95
The JJ Electronic E34L adds more power to a standard EL34 due to its higher grid voltage rating. This increase gives the tube more headroom and a tighter response on the low end. The wide frequency response of this tube offers excellent harmonics that work in a variety of genres ranging from the cleanest cleans to rich and aggressive breakup.
== === = = =  = =
 EL34, JJ Electronics
SKU:  T-EL34-JJ   Item ID: 004841   Starting at: $13.95
The JJ Electronic EL34 is another classic from JJ. This tube features a rugged construction leading to an incredibly reliable EL34 with astonishing tone. Overall the sound is nicely balanced with tight lows, a rich and dynamic mid range and clear highs. The JJ EL34 is a great replacement for guitar amplifiers and stereo amps as well.
=== =   === = = =
EL34 II, JJ Electronics, Pentode
SKU:  T-EL34II-JJ   Item ID: 039636  Starting at: $16.00
The JJ Electronic EL34 II is a different construction of the classic EL34 tube that offers a different tonal palette than the original. This tube has a more compact plate structure than standard EL34. The JJ EL34 II has an increased low to low-mid end with plenty of headroom to spare. This tube has a thick and tight bass response. The mids are balanced and harmonically rich with pleasantly smooth highs. The JJ EL34 II is stronger than the original but not harsh sounding in any way. When overdriven, this tube has a warm and dynamic distortion that rivals many vintage tubes.
===  = =  = =  ===
Vacuum Tube - 6CA7, JJ Electronics
SKU: T-6CA7-JJ  Item ID: 004661  Starting at: $16.45
The JJ Electronic 6CA7 is a true to form reproduction of a classic tube that will work in most EL34 amps. The 6CA7 is often considered the American cousin to the British EL34. Sonically, this tube is closer to a 6L6 than an EL34 but without the sometimes harsh high end of the 6L6. The JJ 6CA7 offers warm highs with punchy articulate mids and tight lows. Wielding even more power than a KT77, this tube is a great choice for people looking for a change in their EL34 amp’s tone or want to push their levels that much further.
= == = = = ====   =
EL34  Electro-Harmonix
SKU: T-EL34-EH   Item ID:    004840   Starting at: $17.95
Most common power pentode found in British amplifiers such as Marshall, Hiwatt, Laney, and Sound City. The EL34EH defines the classic British rock sound of the 1960s and 1970s.
== ==== = = = ==  =
E34L  JJ Electronics, Blue Glass
SKU:  T-E34L-BL-JJ  Item ID:  004828  Starting at: $18.95
The JJ Electronic E34L adds more power to a standard EL34 due to its higher grid voltage rating. This increase gives the tube more headroom and a tighter response on the low end. The wide frequency response of this tube offers excellent harmonics that work in a variety of genres ranging from the cleanest cleans to rich and aggressive breakup (guitar).
==   = = = =   ====
Vacuum Tube - 6CA7, Electro-Harmonix  Big Bottle
SKU:  T-6CA7-EH   Item ID: 004660
List Price: $25.25  Starting at: $19.95
Electro-Harmonix 6CA7 Vacuum Tube Big bottle beam-tetrode version of EL34. Perfect EL34 replacement for Musicman amplifiers.
= ==   = = = = ====
Vacuum Tube - KT77, JJ Electronics
SKU:  T-KT77-JJ  Item ID: 004874  Starting at: $19.95
IThe JJ Electronic KT77 is a reproduction of the original tubes that captures the sound that made the KT77 famous. In their typical fashion, JJ has built this tube in a solid construction that is robust and highly reliable. This tube has more headroom than a typical EL34. The low end is fat and defines with detailed and responsive mids and smooth highs. This is an excellent tube for adding more power to the sound of an EL34 amp.
==   =  = = = ====
EL34B  TAD  Tube Amp Doctor
SKU:  T-EL34B-TAD-X  Item ID: 004849  Starting at: $21.25
Octal power tube (Max Plate Watts = 25W)
Sensational new high-gain EL34 tube with a very dynamic tone. An authentic remake of the British Mullard EL34. The clear and harmonic open top end allows for great clean tone and at the same time the TAD EL34B-STR offers incredibly powerful mids and equally powerful bass. The golden control grid and especially large cooling grids guarantee maximum stability and reliability. Consequently, this EL34 provides a maximum of gain and dynamic response.
=   ==  =  = = ====
EL34B, Tung-Sol Reissue
SKU: T-EL34B-TUNG  Item ID: 004850  Starting at: $24.70
Higher impedance design with increased touch responsiveness and a unique clipping characteristic with a hint of the 6L6 sound. Made in Saratov, Russia.
===   =   = = = =  =
EL34  Groove Tubes   Matched Pair
SKU:  T-EL34M-MP-GT  Item ID: 004852  Price: $47.00
Octal power tube (Max Plate Watts = 25W) The GT EL34 is based on the original Mullard® EL34 of the '60s - the stock tube in all early Marshall® and Hiwatt® amps. Mullard produced it for about 15 years, and this is a faithful reproduction of the classic XF2 dual-getter version. It has a big, fat and well-defined tone and really “wakes up" reissue amps to perform like the originals. As close as you can get to vintage Marshall® power tube heaven.
==== = = =   = =
E34L  Groove Tubes  Matched Pair
SKU:  T-E34L-S-MP-GT  Item ID: 004829  Price: $55.00
Octal power tube (Max Plate Watts = 25W) EXCLUSIVE GT design. The heat wings attached to the plate give this version of the original EL34 15 - 20 percent more power. Interchanges in any EL34 application and stays tight and robust all the way up to full power. Highly dynamic, big low end and runs cooler for longer life. Amazing headroom, killer tone and all of the great features and characteristics of the EL34 design.
==  = ==    === = ==
Vacuum Tube - 6CA7 / EL34, Mullard, Pentode
SKU:  T-6CA7_EL34-M  Item ID:  007479  Price: $179.90
The 6CA7 is a power pentode of the glass octal type. This tube is suitable for all applications which require peak powers of up to 11 watts from a single tube or up to 100 watts from two tubes in the normal push-pull arrangement. It is equally suitable for domestic amplifiers and public address equipment.
=== ===   =  ==
EL34  Mullard Reissue
SKU:   T-EL34-MUL  Item ID:  004843  Starting at: $23.25
Copy of the XF2 Mullard EL34 of the 60s. The perfect power tube for the Dynaco ST-70 or vintage Marshall amplifiers. the best current production EL34 available Made in Saratov, Russia.

[FullRangeMan]

This a 6L6 and KT66 interesting stuff>
https://srl.utu.fi/~tke/MesaBoogie/Tube/6l6review.html