[tuatara]

Having said earlier on this thread that I hadn't noticed much difference tube rolling my MAD I now have to retract that statement.
I've been playing around with the HD100 and my new W5000 phones and wasn't really happy with the combo. There was a very low hum, similar to that with the Yamamoto and the W5000s and although using the '53 GE tmbp the sound was quite controlled and certainly very detailed it just wasn't pleasing.
So today I replace the GE with a Syvania Gold Brand gold pin 2mgp and noticed an immediate difference and for me an improvement.

First, the hum was gone,great...the bass still deep, maybe not quite as fast, the mid range a bit fuller , the higher notes maybe a little more 'mellow' but the important bit is that the music is a lot more enjoyable to listen to.

Now the Sylvania may not be so good with the Grados, in fact from what I can remember I was a bit underwhelmed last time I tried it given its reputation.

The W5000s seem to be a very sensitive headphone and maybe one that will yeld a greater variance when tube rolling the Mapletree. Plenty more tubes to try yet.

 

[munkong]

after aks more specialist in this forum

I ordered GE 5751 Black Place 5 star triple-mica (NOS) from Roy & Dale
with $45 per tube

is it good price ?

 

[iamoneagain]

Update: After giving the Raytheon another shot, it definitely is the winner. The GE 5-star has more wow and is more dynamic, so when comparing the two, the GE seems better on a quick switch but the Raytheon wins after an extended listen.

The Raytheon does much better on vocals. Very natural. It was has much better texture throughout the frequencies especially in the bass. The music has body to it, strings vibrate, very seductive. So you're not wowed into the music but drawn in slowly. It is still very dynamic and does excellent on rock music.

The GE-5 star has more pronounced highs and is more dynamic but seems to be missing something. It has a wider sound but not as deep. I just don't feel as satisfied after listening to the GE for a while.

This is the Raytheon I have: Raytheon 5751 blackplate vintage tube w/windmill getter.

I might seek out now seek out the Sylvania Gold mentioned in the linked articles.

Here some links some of you may have already read:

http://www.nickdangerous.com/misc/mg...estubelore.htm
http://www.nickdangerous.com/misc/mghead/

 

[blinx]

Quote:

Originally Posted by tuatara /img/forum/go_quote.gif Having said earlier on this thread that I hadn't noticed much difference tube rolling my MAD I now have to retract that statement. I've been playing around with the HD100 and my new W5000 phones and wasn't really happy with the combo. There was a very low hum, similar to that with the Yamamoto and the W5000s and although using the '53 GE tmbp the sound was quite controlled and certainly very detailed it just wasn't pleasing. So today I replace the GE with a Syvania Gold Brand gold pin 2mgp and noticed an immediate difference and for me an improvement. First, the hum was gone,great...the bass still deep, maybe not quite as fast, the mid range a bit fuller , the higher notes maybe a little more 'mellow' but the important bit is that the music is a lot more enjoyable to listen to. Now the Sylvania may not be so good with the Grados, in fact from what I can remember I was a bit underwhelmed last time I tried it given its reputation. The W5000s seem to be a very sensitive headphone and maybe one that will yeld a greater variance when tube rolling the Mapletree. Plenty more tubes to try yet.

i agree, the sylvania makes my 325i really freakin bright

 

[iamoneagain]

Quote:

Originally Posted by blinx /img/forum/go_quote.gif i agree, the sylvania makes my 325i really freakin bright

Thanks, based on that, I think the Raytheon might be perfect. I'll have my setup at the national meet, so I'll be trying it with some of the other Grados. I do know the GS1000 and Raytheon are a bad match. Not sure if the GE would help or the MAD/GS1000 combo in general is bad.

 

[tuatara]

Quote:

Originally Posted by iamoneagain /img/forum/go_quote.gif Thanks, based on that, I think the Raytheon might be perfect. I'll have my setup at the national meet, so I'll be trying it with some of the other Grados. I do know the GS1000 and Raytheon are a bad match. Not sure if the GE would help or the MAD/GS1000 combo in general is bad.

I tried a GE tmbp(1952?) when using the GS1000s and wasn't overly impressed,but I dont seem to like the Grados whatever I tried with them.

Re the Sylvania, I thought it softened the sound with my RS1s which is why I prefered the GE, a bit more forward and punch.

 

[LoweArt]

I prefer using either GE 5751 triple mica or 12AX7EH ( Electro-Harmonix )

For the back tubes, I have found I prefer the Red label RCA 12B4A's with the GE's a close second. The Rayethons are in the bottom of my spares box.

I use Ear + purist with cap mods

 

[Geoff Rymer]

Quote:

Originally Posted by munkong /img/forum/go_quote.gif after aks more specialist in this forum I ordered GE 5751 Black Place 5 star triple-mica (NOS) from Roy & Dale with $45 per tube is it good price ?

Not too bad. I'm using the same tube with my HF-1s and it sounds lovely. I prefer it to the stock Sovtek, which seems to have rolled off treble by comparison. Acoustic guitar in particular sounds wonderful with this combo.

I've yet to try other NOS/aftermarket tubes though. It would be interesting to try some of the other well regarded options, and 12AX7s too.

 

[pageman99]

Well, I bid on a Genalex Red Lion 12AX7 B759 Ultra Low Noise a couple weeks ago on ebay. It's a well regarded tube and not well known at all.

Hah, it sold for 328.60

http://cgi.ebay.com/ws/eBayISAPI.dll...8936&rd=1&rd=1

Oddly there was a 2nd one. And it sold for over $400.

Guess it's a bit more than well regarded.

Wow! And I thought we were nuts.

 

[Hi-Finthen]

Quote:

Originally Posted by pageman99 /img/forum/go_quote.gif Well, I bid on a Genalex Red Lion 12AX7 B759 Ultra Low Noise a couple weeks ago on ebay. It's a well regarded tube and not well known at all. Hah, it sold for 328.60 http://cgi.ebay.com/ws/eBayISAPI.dll...8936&rd=1&rd=1 Oddly there was a 2nd one. And it sold for over $400. Guess it's a bit more than well regarded. Wow! And I thought we were nuts.

Well yea, this is the beauty of the 5751 in our MADs V1, it seems to be not so much in demand due to its 20% less gain, but pleanty of gain even with my k501s... And generally, I believe it is regarded to be sweeter in our application than the 12AX7 s with some few exceptions....

 

[pageman99]

Quote:

Originally Posted by Hi-Finthen /img/forum/go_quote.gif Well yea, this is the beauty of the 5751 in our MADs V1, it seems to be not so much in demand due to its 20% less gain, but pleanty of gain even with my k501s... And generally, I believe it is regarded to be sweeter in our application than the 12AX7 s with some few exceptions....

Hmm... interesting observation about the 5751 sounding sweeter. I'm not so sure I'd agree with that at all. I've most of the 5751 variants, (I really do, just ask my wallet! Plus one of these days I'll get around to posting my buddy's antique radio collection; hundreds and hundreds) and I find them to be clearer for the most part, but IMO many of the 12AX7's are richer.

I suppose it's system dependent, of course, as I use various DVD players as source running through a Musiland dac (which is considered a warm source), most of the time. I've used several other dacs with the same results as well.

Has anyone else besides me tried a long plate Telefunken ecc83? Very rich AND detailed IMO. Anyone else?

 

[iamoneagain]

Well I found the perfect tube for the Mapletree and PS-1. I'd imagine it would be perfect for the RS-1 as well as other headphones. It's the JHS-5751 Sylvania. I actually got a red label National brand one, but they are supposed to be identical.

I was going between the GE 5-star and the Raytheon and both were just not quite right. The Raytheon wasn't that dynamic but was very smooth and enjoyable to listen to. The 5-star was very dynamic but had a touch of harshness and was missing the lush tube sound.

The Sylvania is the best of both of these and more. It's more dynamic and very sweet and lush. It's also very detailed and textured but so musical and enjoyable. It also has much better soundstage depth. Very realistic even on the PS-1. This is the perfect combo.

The only problem was the tube cost $85. I probably could have done more searching but I took the plunge figuring the headphones were $1400, so what's $85 for single tube in the long run. I got it at: https://www.tubeworld.com

 

[kg21]

Quote:

Originally Posted by iamoneagain /img/forum/go_quote.gif Well I found the perfect tube for the Mapletree and PS-1. I'd imagine it would be perfect for the RS-1 as well as other headphones. It's the JHS-5751 Sylvania. I actually got a red label National brand one, but they are supposed to be identical. I was going between the GE 5-star and the Raytheon and both were just not quite right. The Raytheon wasn't that dynamic but was very smooth and enjoyable to listen to. The 5-star was very dynamic but had a touch of harshness and was missing the lush tube sound. The Sylvania is the best of both of these and more. It's more dynamic and very sweet and lush. It's also very detailed and textured but so musical and enjoyable. It also has much better soundstage depth. Very realistic even on the PS-1. This is the perfect combo. The only problem was the tube cost $85. I probably could have done more searching but I took the plunge figuring the headphones were $1400, so what's $85 for single tube in the long run. I got it at: https://www.tubeworld.com

bringing this thread back from the dead, need more inputs

I have read a couple reviews saying the sylvania 5751 are awesome, definitely interested in getting one will probably do that next. I bought my amp used off of someone on head-fi and he included a 12az7 he said it was only 5 bucks but liked the sound. Surprisingly, I preferred it to the rca triple mica 5 star black plate 5751 he also included. Dr. Peppard said it works fine although he said he doesn't think it's quite right. That got me thinking and I got a tung sol 12az7a off ebay. I just noticed it's actually cheaper on tube world by about 5 bucks but I digress. Anyway the tung sol 12az7a so far handily beats the other two. Considering how many things work for this amp 12ax7, 5751, 12at7, 12az7 etc. anyone else found anything that was a big suprise?

 

[mrarroyo]

Quote:

Originally Posted by kg21 /img/forum/go_quote.gif bringing this thread back from the dead, need more inputs I have read a couple reviews saying the sylvania 5751 are awesome, definitely interested in getting one will probably do that next. I bought my amp used off of someone on head-fi and he included a 12az7 he said it was only 5 bucks but liked the sound. Surprisingly, I preferred it to the rca triple mica 5 star black plate 5751 he also included. Dr. Peppard said it works fine although he said he doesn't think it's quite right. That got me thinking and I got a tung sol 12az7a off ebay. I just noticed it's actually cheaper on tube world by about 5 bucks but I digress. Anyway the tung sol 12az7a so far handily beats the other two. Considering how many things work for this amp 12ax7, 5751, 12at7, 12az7 etc. anyone else found anything that was a big suprise?

You could try the 7025 variant of the 12AX7, a military low noise version that is.

 

[BigAmish]

For me, I like the following:

Oppo 970HD > MAD Ear+ HD > RS-1: Sylvania JAN 5751
Sony SCD CE595 > MAD Ear+ HD > RS-1: Shuguang 12AX7

The Shuguang is an essential tube for me with the Sony CDP as it counteracts its relatively laid-back presentation & reintroduces clarity, airiness, and bass punch/slam with authority. Without the Shuguang (thank goodness I had one at hand), I would have been tempted to get rid of my newly-acquired Sony! This result was particularly surprising because prior to my discovering this match, I had little use for the Shuguang 12AX7. It was just too forward-sounding when paired with an equally forward CDP.