ToneBone PENTODE (price per pair converter)
TONE BONE? includes selected EL84 tube + english/german manual
converters do permit to replace 6L6GC, 5881, EL34 and 6V6GT for EL84/6BQ5 tubes and operates them in pure CLASS A. It is ready to plug in your amp and play. The TONE BONE improves the amp sonically, its sensitivity and reduces the overall loudness so you can crank it up at reasonable volume.
- Class A + Cathode Bias with EL84
- Pure harmonic sweet distortion for every amp
- Extra smooth tone with Triode version
- Decent compression when played clean
- Improves sustain and thickens your tone
- Available as Triode or Pentode version
- Replaces 6L6GC, EL34, 5881, 6V6GT with EL84
- Plug & Play! No adjustments, no modifications
TONE, TONE, TONE ?
How the TONE BONE? benefits your amps voice:
The tone of a CLASS A operated guitar amp is well known from the legendary VOX AC30. Tone gets more alive, the amp responds more directly and musically. It instantly improves sustain, thickens tone and is adding a "three-dimensional" character with decent compression and smooth harmonic distortion when driven to the limit. The overall loudness will be reduced as the Class A as the EL84 tubes provides less output volume. So you can crank up your amp all the way and achieve best sonically performance at reasonable volume ( 8 ? 30 Watt, depending on your amp and the TONE BONE? version you use).
PENTODE or TRIODE version?
The TONE BONE? is available as PENTODE and TRIODE version. Both versions basically provide the same benefits. The PENTODE supports the main tonal character of your amp while the TRIODE will clearly make it more linear but will compress and saturate much earlier. The TRIODE makes it sound much smoother and will drop down power output of to about 8 watts when using 2 TONE BONE? converters.
Both versions will provide you outrageous sustain and let you achieve more even distortion sound when cranked up and still give you perfect control with playing dynamics.
PLUG & PLAY or How to install
Switch off your amp, pull out the power tubes (6L6GC, 5881, EL34 or 6V6GT) and plug in TONE BONE? converters including their EL84 tubes, switch amp on. Done!
Size: the ToneBone is without pins 12cm high (5cm adaptor + 7cm EL84).
1cm air gap between the top of the EL84 and Cabinet is required for mounting and air flow.
The TONE BONE? is total self-adjusting. No adjustments, no modifications!
As you do not adjust the bias you might switch back to the original power tubes at any time you want.
Real PLUG & PLAY!
The overall power output depends on your amp and the version of TONE BONE? converters you use:
Pentode: 7 - 9 Watt per converter, 14 -18 Watt per pair
Triode: 4 - 5 Watt per converter, 8 -10 Watt per pair
A 100-Watt amp with 4 6L6GC, 5881 or EL34 would saturate usually at 100W RMS power output. With TONE BONE? converters it saturates at:
TONE BONE? Pentode: with 4 converters about 32 Watt, with 2 about 16 Watt
TONE BONE? Triode: with 4 converters about 18 Watt, with 2 about 9 Watt
The use of TONE BONE? converters is not recommended for amps with Class A / Class AB switching facility (e.g. Fender® Prosonic). These must be used in Class AB position only when using TONE BONEs?.
DO NOT USE the TONE BONE? for amps with cathode controled power amps (e.g. Musicman® RD series, Peavey® Classic 75/100 etc.).
DO NOT USE the TONE BONEs? in Amps with serial filament like the Peavey® Valveking series, Blackstar® Series One
DO NOT USE the TONE BONEs? in Amps with automatic Bias controls like Hughes&Kettner with TSC System
Due to the cathode bias operation of the ToneBone the bias tremolo of the Fender Custom Vibrolux Reverb, Twinolux, Dual Professional and others is out of function
Torben L (3/5)
On one hand:
It makes good sense of course that I can dampen the signal appr. 10 dB less with the power brake and get the same resulting volume and the power brake's three power resistors and the three large heat sinks they're mounted on hardly get warm. It's nice to not waste all the heat a 50W or 100W amp would generate and force the resistors and heat sinks to dissipate and get rid of.
On the other hand:
It's a hard rock album I'm recording. The amp is losing it's bite. It sounds good. I'd say quite good...but not as great as it does with the EL34 pair in it. It's too nice now and it's pulling back into the speaker. Additionally, the amp is a little noisier now. Hiss is becoming loud enough for me to start thinking about a gate when recording but even so the hiss is now audible when I'm playing. It's not much, but it's there and it's unacceptable. If playing with very clean sounds you probably wouldn't notice but I'm REALLY letting my output tubes have it with a signal already driven hard in the preamp.
It's very simple: Tone is king! I'm changing back to the EL34 pair again.
My amp is a Soldano SLO-100 modded to take EL34 instead of 6L6. The EL84 just doesn't measure up in character. In fact I think it's closer to the 6L6 that I'm already moving away from but it also lacks the 6L6 big bottom end.
The ToneBone is easy to use. I did have quite a lot of trouble getting them into the sockets in my amp though. I filed the pins and the guide in the middle a bit, worked, wiggled and worked...and filed...and wiggled some more until I got them seated properly. I'm open for the possibility that the sockets in the Soldano aren't fantastic, so although I've changed tubes in it before without it ever being a hassle like this at all, I'll give them the benefit of the doubt. I also know of others who have had absolutely no trouble pushing them into the sockets. So yes, they're easy to use and the fact that you don't need to re-bias or anything, enabling you to pop them out and pop the regular tubes back in, is a very nice feature. Especially with amps that you need to disassemble to adjust bias on. That's something I'll never learn to understand - why it hasn't been made easily accessible on all modern tube amps? It's downright stupid to have to go through all that just to adjust bias on your amp....well...
I'm not a big fan of some of the classic Fender amps, but I think that the EL84 would actually be a much better choice for me in, say, a Twin Reverb than the original. Those amps have the presence of an icepick in my opinion and the softening up that happens with an EL84 may very well be the cure I would be looking for there. But that's not what I tested here. I just wanted to mention that I do see the potential for that.
Less power means less heat dissipation - Nice!
Easy to use and to change back forth between tubes - Nice!
A little noiser when amp is driven hard - Bummer!
Sounds a little duller that the higher power tubes - Bummer!
It has to land right in the middle. The ToneBones work just great technically but paired with tubes that kind of defies the purpose, unfortunately it's not a solution for me.
Antti Leinonen (5/5)
I just installed pair of these today to my Fender Hot Rod Deville III 212 60W tube amp and... WOW! These tube sockets/converters are really a fantastic value for this price, even the tubes were included. I had also other TAD EL-84 matched pair tubes and I put them in and kept the factory tubes as spares.
My amp was too loud to my taste with 6L6´s and maybe little bit bassy and after these TAD´s I can easily roll clean master volume to about 8-9 (with SPL Reducer attenuator) and the gain channel at more gain switched on to about 5-6 without loosing my ears... The amp still has it´s own type of sound so I recommend these instead of triode versions. If the sound gets too dark/compressed, you can add more treble or use the normal/bright switch from the amp. I use the guitar plug in input 2 which reduces additional -6 dB from the signal.
Very highly recommended!!!
Robert Mathe (5/5)
I replaced the 2x6L6s in my '59 Bassman with two ToneBones and got a new fantastic sound! Amazig!
'ToneBone' should be patented if it is not yet.
It has very big value!!!
Thank you guys!!