To Tube or not to Tube, that is the question


I've been building a collection of hifi equipment with an ear to sampling the major families of tech and their characteristic sounds. One thing I don't have is a tube amp, unless you count my Rogue Sphinx. I like DIY if the final product is of good quality and design. I'm not averse to used either. Budget range is $1000-2000.

Can anyone suggest a tube amp, either power or integrated that would bring a nice sound flavor to my sandbox and not break the bank. OR do you think the Sphinx and the Pass amps pretty well serve up most of what is to be had in terms of tubey goodness and maybe this is not a worthwhile venture?

Here is what I have got in the way of speakers to play with:

KEF LS50

Tangent RS4

Klipsch RP-160

DIY Lii F6/Caintuck

DIY Lii F15 (under construction)

AR 2ax

 

And here is the current line up of amps:
Rogue Sphinx     
ClassD Audio Mini Gan 5    
DIY Firstwatt F6    
DIY Pass ACA (2)    
Onkyo TX-6000 Receiver    

Thanks in advance for your opinion.

 

 
 
 
 
 
 
Ag insider logo xs@2xbruce19

I've been quite pleased with my LSA VT-70 from Underwood HiFi, an online retailer. 35 watts/channel with EL34 output tubes (and it will also accept 6550 or KT88 outputs.) They are currently $1,300 plus shipping. 

To tell you the truth, your Sphinx is getting you 99% there. Tube gear takes a few more bucks to own and operate and you'll need some really nice tube friendly loudspeakers to go with the tube amps. My favorite tube set-ups featured Triangle floorstanding loudspeakers.

Great recommendations above. 

I agree that you should look at China Hifi.  Just be sure to watch the voltage specified with the amp. If you're in North America, you'll want 115/120v.  

I've owned and built all sorts of tube amps.  Willsenton and Doge are amazing amps regardless of the price/country of manufacture.  

 

What tubes are you using in the Sphinx. It makes a difference. I am using a Sphinx v3 as a preamp with NOS Brimar 12au7's with an Orchard Audio GaN FeT amp and the sound is exceptional.

@evank Funny I bought a pair of Brimars from Upscale but they were noisy and they gave me all kinds of static about replacing them, so I went back to the JJ's. I think they give a more defined sound which I like, the Brimars sounded more muted to my ears. That is really interesting using the Gan Fet as the power stage on the Sphinx. Since I have one in the form of the MiniGan 5 I may try that one day, but I never thought the hypex units in the Sphinx were lacking. I love its overall sound!

The main speakers I see using with tubes are the two Lii audio full range, open baffles which both have efficiencies in the mid 90spl. Also the Klipsch RP-160s are rated at 96. These Lii speakers in the Caintuck inspired barrel shapes with no crossovers are magnificent, particularly for the money. I do supplement all my speakers in the main system with a trio of Syzygy subs to take care of the deep end.

The Rogue CM is a fine suggestion, if I wasn't focused so much on building my own I would definitely give them a listen. May do so anyway. Same for the Williston and other Chi-Fi. Thanks!

My own research has me looking at Dynakit ST-35,

And this Decware Zentriode kit, https://www.decware.com/newsite/SE84CDIY.htm

I did some parts pricing yesterday and the ST-35 would come in at $875 with tubes and the Decware Zen Triode would be a bout $500