6l6 vs 300b - a few questions

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peckjed

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6l6 vs 300b - a few questions
« on: 22 Nov 2018, 12:03 am »
Hey everyone. Currently I have a 20w Dennis Had Inspire that utilizes 4 6l6, 6SN7 (or 6SL7) and 5U4 rectifier and a few voltage regulator tubes in a parallel SEP fasion. The rest of my system consists of a Red Wine Audio Isabella preamp/DAC and Red Wine Audio Phono. I recently sold my Omega SAM HO speakers on a quest for some Audio Notes (that I’m still searching for). While I’m at it I was considering switching over to the Audio Note Interstage 300b mono blocks that use a 6SH7 driver and 5U4 rectifierthats parallel triode SE. I’ve always been curious about 300b but not entirely sure about the Sonics. I am essentially looking for something a bit airier and additional top end with that same rich mid range. Do you guys this switching to the 300b would accomplish this?

FullRangeMan

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Re: 6l6 vs 300b - a few questions
« Reply #1 on: 22 Nov 2018, 12:17 am »
I dont know what are your personal taste in your room, but I think you most stick with single ended triode with cheap tubes as EL34, KT88 KT90 as avaliable in the Inspire line which delivery 5/10W.

300B is just a hi priced fairy tale that will give you lots of expenses and short life, you need a 100dB speaker to pair with a small SET amp:
http://www.decware.com/newsite/SE34I.htm

Tom Bombadil

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Re: 6l6 vs 300b - a few questions
« Reply #2 on: 22 Nov 2018, 12:33 am »
Is that his amp which is restricted to just 6L6?  I know he designed one for just 6V6 tubes.  If it can also run EL34-type tubes then you might try Gold Lion KT77 tubes which do produce more air and high end detail. 

peckjed

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Re: 6l6 vs 300b - a few questions
« Reply #3 on: 22 Nov 2018, 12:57 am »
Is that his amp which is restricted to just 6L6?  I know he designed one for just 6V6 tubes.  If it can also run EL34-type tubes then you might try Gold Lion KT77 tubes which do produce more air and high end detail.

It can definitely use el34’s type tubes. I may give KT77 a shot soon.

peckjed

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Re: 6l6 vs 300b - a few questions
« Reply #4 on: 22 Nov 2018, 12:58 am »
I dont know what are your personal taste in your room, but I think you most stick with single ended triode with cheap tubes as EL34, KT88 KT90 as avaliable in the Inspire line which delivery 5/10W.

300B is just a hi priced fairy tale that will give you lots of expenses and short life, you need a 100dB speaker to pair with a small SET amp:
http://www.decware.com/newsite/SE34I.htm

The 300B amp I was looking at is 18 watts, so I wouldn’t need a terribly sensitive speaker, but good sensitivity would be ideal.

I tried a few decware amps and wasn’t crazy about the sound, unfortunately.

JakeJ

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Re: 6l6 vs 300b - a few questions
« Reply #5 on: 22 Nov 2018, 01:17 am »
These?
http://www.ankaudiokits.com/Interstage-Quad-C-Core-300B-Power-Tube-Amplifier.html

Quite the task.  I would have to take the the cost of re-tubing into consideration but you may not have that limitation.  If not then I say go for it!

peckjed

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Re: 6l6 vs 300b - a few questions
« Reply #6 on: 22 Nov 2018, 01:33 am »
These?
http://www.ankaudiokits.com/Interstage-Quad-C-Core-300B-Power-Tube-Amplifier.html

Quite the task.  I would have to take the the cost of re-tubing into consideration but you may not have that limitation.  If not then I say go for it!

The normal versions of those, but yes. Re-tubing shouldn’t be terrible if I’m sticking with JJ. Anything NOS woild be outrageous. But NOS of other power tubes can also get pretty pricey (albeit not quite 300b pricey).

JakeJ

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Re: 6l6 vs 300b - a few questions
« Reply #7 on: 22 Nov 2018, 01:54 am »
Normal version?
http://www.ankaudiokits.com/e-shop3/ank-audio-kits-product-range/single-ended-set-300b-amplifiers/interstage-monoblock-pse-300b.html

I didn't find a 300B monoblock with interstage transformers over on Audio Note UK.

Yeah, NOS would be, I stumbled across a pair of WE engraved base from the late thirties and the price is....





Are you sitting down?











$20,000

Yup, twenty thousand bucks for two tubes!  Ha!  Not from me.  About the best I could muster would be matched pairs of Genelex Golden Lion at a bit over $300 ($600+ for two mono amps).  Black Treasures are $100 more.

FullRangeMan

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Re: 6l6 vs 300b - a few questions
« Reply #8 on: 22 Nov 2018, 02:04 am »
This boutique AN PP 300B amp is about the price the Lampizator GM70 SE monoblocks which GM70 tubes cost $21 each and last about 3K hours w/softstart.
http://www.gstube.com/catalog/?key=gm70&submit=Find

rodge827

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Re: 6l6 vs 300b - a few questions
« Reply #9 on: 22 Nov 2018, 06:25 pm »
While I’m at it I was considering switching over to the Audio Note Interstage 300b mono blocks that use a 6SH7 driver and 5U4 rectifierthats parallel triode SE. I’ve always been curious about 300b but not entirely sure about the Sonics. I am essentially looking for something a bit airier and additional top end with that same rich mid range. Do you guys this switching to the 300b would accomplish this?

I have the ANK SE 8w Interstage mono blocks and can vouch for their sound quality. If you can do it, single ended will give you the best performance for 300b tubes. Going with parallel or a push pull design reduces a lot of the "airy magic" attributed to 300b's. A good transformer coupled preamp (ANK L3 or L4) with excellent detail retrieval will further enhance what a SET 300b can do. Mine are paired with an ANK L4 and Charney Maestro 100db horns with excellent results.

Chris