Valve Amps and other Myths

As you wrote Pete, there are some myths around tubes amps, like the heat ( not in my case), or a dull and sirupy sound ( neither my case).
This world is very motley: there are 6w tubes amps and other with 200 W . Some brands sound like solid state ( Audio research, Ypsilon, …) , other have a bit romantic sound like in the past ( Conrad Johnson, Jadis…) and other are fast and dynamic, with a glowing midrange ( Ear Yoshino, Lamm, Berning…Aries Cerat….).

Do you want to try one? With a turntable, today, I could not go back to transistors. Tubes phono, well done, sound more real to me.

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Paging @frenchrooster - who I think runs a EAR 912 valve preamp with Naim front end and Naim power.

Hah, sorry, posted too late X)

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No I’m not investing in a turntable and will stick to my NDX2 with PS. I was wondering how they (valve amps) would sound with a Naim pre and source.

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In the early nineties, Vinyl Tube Audio in Kentish Town, north London, sold interesting gear. A great deal of the staff’s efforts went into matching the low output amps with sensitive speakers. Hoping this might help you Peter.

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About 5 years back I had a Conrad Johnson PV-5 valve preamp that had 8 valves, 4 for the amp section and 4 for the on-board phono stage. I had it paired with an Adcom amp initially, and then an Ayre amp. The sound was good, but it just wasn’t dynamic enough.
It was at that point that I decided to give Naim kit a try. Well, that was the clincher and I’ve never looked back. Naim just sounded so much better than anything I’d had before, and suddenly, speaker placement wasn’t nearly as important.
I would expect the same from Naim amplification with a valve preamp. This is where one gets into pairing the right units together as FR has done. Some work well, some don’t. Naim simplifies that process with units that are designed for each other.
This was my experience, anyway.

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In my system I have both a CB NAP160 and an original Radford STA15, both are fed by my NAC72.

The Radford has a slightly airier midrange, but the NAP has better control of the speakers. Most of the time I stick with the NAP.

I understood many of the better known valves were made in or sourced from Russia. I wonder how easy replacements are/will be?

Hi FR. I notice in your profile you have NOS Telefunken ECC88 valves. I was just at the point of giving these a try in my PV-5 to possibly improve the character of it, but then I made a quick decision to try Naim kit.
They are excellent preamp valves from what I researched.

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I had listened to Conrad Johnson some years ago, around 2008/2010. I had even bought an EV1 phono. The midrange was so nice and rich, as well micro dynamics. But after some time I couldn’t live with the restraint dynamics. Better tubes would not change enough that I feel.

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I will do soon but only in the realm of headphones. I’ll be using the Atom HE into a Feliks Envy. Still waiting for it though as there’s a bit of a waiting list with them being fairly new.

In terms of sound, @frenchrooster has covered it well. I’d add, increased sound stage / improved imaging and layering depending on what tubes are used.

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I’ve had many pieces of valve kit over the years; EAR, Michaelson, Audio Research, Conrad Johnson, and each has had strengths and weaknesses. The only pieces of valve gear I still have are some vintage amps and a phono stage (Puresound). I never did much mixing of valve gear and Naim, and who I did it was never very successful (the Puresound phono stage was good though).

My general impressions are that it was fun to try different valves/tubes, although the best usually turned out to be NOS and increasingly very expensive. Power amps could be frustrating with performance variance and modern tubes being very variable and not so reliable. At their best, they could be really beguiling, for a while… Valve power amps could really get the electricity meter spinning too - especially the ones with 8 valves running in Class A, so they will cost you lots in terms of valves and electricity - worth considering, especially these days.

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Richard’s post is spot on.

I owned a level 5 Audio Note system until a year ago and had so many issues with the build quality especially the power amps. Seven faults over a two year period :see_no_evil:

The beguiling character to the sound was certainly there with the almost tangible tone and texture. On certain albums it was lovely. However I wouldn’t want to go back to it now even if it was reliable. My Statement level Naim system ( all bar the power amp) is almost as textured but with much better speed of response to transients, so times much better with radically better bass and a much more open sound not compressing during very complex passages. It’s an altogether more cohesive reproduction.

The clever “valve” dealers will no doubt dem their stock with the likes of Diana Krall or a Jazz trio not Jeff Beck or similar ilk. “You pay your money…”

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I used an Audio Innovations 500 with a CD5, CD5/Hi and a CDX2. In the context of my system at the time, it was an appealing balance, comprising a really crisp, fast, front end with the life like, unprocessed, organic presentation and detail of tubes.

The 500 needed servicing at about five year intervals and would occasionally eat a valve. I had it modified by Boarder Patrol, who fitted a custom rectifier to stop the output valves potentially burning out. When I decided to pension it off, the 202/200 seemed like a no brainer. It wasn’t. I added a Boarder Patrol external power supply to the 500 and kept it. By then I was using CDX2/XPS2 as my source. I loved the fluid, organic, finely detailed sound balance, coupled with the fast response that a valve amp can deliver and the pile driving relentlessness of the CDX2/XPS2.

When I again decided to pension off the 500, the 282/250/Hi was calling. Like the 202/200, I found it to sound processed, artificial and lacking in finesse. A considerable step up from the 202/200 but not good enough. After more auditioning of SS candidates, I bumped into and was won over by the Graaff GM50, which sounded simply sublime and remained at the heart of our system, fed by HDX-SSD/DAC/555PS front end. A couple of old forum members also went this way, one of them switching from a 250 (can’t remember the pre), the other I heard about second hand.

When I heard the 252/Super/300 everything changed. Finally, something with the subtlety required plus a vice like grip to go with it. A very worth while upgrade. A bad SS amp will sound as bad as a bad tube amp. A good SS amp will sound as world beating as a good tube amp. You can’t generalise about the “valve sound” versus the “SS sound”. there is no such thing. And of course, you always need to factor in the ears of the listener, their preferences, the room and how the speakers play the room.

I’m not in the least sentimental about vinyl. CD came with its own issues which took years to sort out, but I couldn’t wait to escape the limitations of vinyl.

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While it’s possible to have both with a 2 channel system, it’s certainly a lot easier when it comes to a headphone systems. I can have both together and easily switch when the mood takes me.

Audionote, as Jadis, Air Tight, Conrad Johnson , Mastersound, Leben…belong to a bit nice, mellow but not energetic kind of sound.
You would be surprised if you heard top Aries Cerat electronics.
But personally, if I had a full Statement system, not sure I would miss tubes.
Recently I heard the new Gryphon line. Was surprised at how natural, unforced , textured but in the meantime very involving and dynamic they sound. Could miss tubes too.

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Fair points frenchrooster. It was the reliability that I had the biggest problem with.

But I agree there are many roads to audio nirvana and the Naim sound isn’t for everyone. Although I’m not sure why some people post on the Naim forum if they prefer a different type of sound!

Anyway I lived with a top valve system for a few years so no conjecture in what I wrote and I stand by my judgement. No regrets here.

I used to be an Audio Research fanboy back in the 80s and 90s. From pure tube SP3 to hybrid SP14 pre amps. From low power Classic 30 to high power D250 power amps.

I liked them all. But honestly, I still preferred matching my ARC tube pre amps with other solid state power amps such as Threshold, Muse, B&K, Adcom, Hafler, etc…. To me, having a tube pre amp together with a solid state power amp seemed to give me the best of both worlds; liquid midrange and a tight bottom end.

But of course, everyone knows I now use a Nait.

Oh, I do still have my SP6.

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I have several items of valve gear, DAC with valve pre out, Pre-amp and headphone energiser, they don’t get much, if any use these days.
Of course they are charming, that warm glow, the feeling that you can see how they are made inside, the ease with which you can tinker, ‘tube rolling’ but the reality is they are simply the forerunner to the transistor, they serve a very similar task and in the line level small signal audio world they work reasonably well, almost as well as a well designed solid state bit of kit but requiring a lot more space/power/ventilation and maintenance.

Ok for the romance of it all, but I wouldn’t buy them for their sound quality, unless you play guitar or Hammond organ, then their ‘interesting’ characteristics are appreciated and the extra hassle and distortion might work with you. :0)

I wouldn’t say I mix valves with Naim exactly. I have a valve amp system and I have a Naim system. Both are main systems. I love both systems. They do different things.

One thing about valves is they won’t necessarily sound valveish. That warm sound people mention mostly comes from the rectifiers rather the output stage and most from the amp being pushed a little too hard for it’s ability. So a valve amp with solid state rectification or a valve amp that has tubes you might expect to allow more power but don’t, will often sound a lot like solid state.

I have a friend who also has a valve amp and we have very different experiences. He like to roll his own valves. So spends a lot on NOS valves and ends up with maybe a 20% yield. There are a lot of valves that no longer work and a lot of fuses blowing (quite violently in his amp after a failed pairing).

I’m not into that. My valve amp has tubes carefully selected by the manufacturer (they reject 60% of everything they buy from JJ). And while you can just plug your own in, it isn’t supported. They are bit like Naim in that respect. You are expected to send the amp to the mothership every 10 years for them to fit approved and selected tubes. I’m fine with that.

The low power isn’t an issue. I get buy with just 10wpc but many amps out there are less than 5wpc. You just get acquainted with a totally different subset of speaker brands than you are used to with solid state amps. They are out there. Finding some 98db speakers to pair with a 10w amp in a large room isn’t as hard as you think. And electricity bill isn’t a major issue. You never leave a valve amp on “warmed up”. So my 10w amp might pull 100w when powered on but that’s only for 1 hour every 2 days.

For the record, yes, my vinyl system is the valve system. Mine isn’t a warm sounding amp. But it has a degree of transparency and a low noise floor my far more expensive 282/SCdr/250dr just can’t come close to - not by miles.

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It’s not that I prefer a different sound, I love the Atom HE and wouldn’t be without it. Think of it like this, people often have more than one pair of headphones to use depending on what they’re listening to or the mood they’re in.

Being able to switch from Solid State & Tubes is no different. I don’t think there is anything wrong or unusual with that. Buying Naim gear doesn’t mean I can’t appreciate other gear or, mean I have to sell my Naim gear because I do. If you see what I mean

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