Budget Tube Amp (newbie)


I'm new to tube amps. I need some advice as to a good budget tube amp with good bass that will push my large Advent speakers. Please keep in mind that I don't know anything about tube amps and don't want to pull the trigger until I can get some advice. I'm new to the Forum. Many thanks from an old guy.
Best regards,
Rob
shutupuface
Just to be clear, in case you're considering Dynaco, their kits are designed to be easily built even with no skill or knowledge. All you need is a soldering pen and something to cut and strip wire. They are great for what they are, but tend to agree with bdp24 that you can in general do better, maybe even for the money. Dynaco are still good, just not the stone bargain they were back in the day when there was a lot less competition for affordable good sounding gear.

You really will want to stay with integrateds and away from separates. Big thing the people pushing separates never mention is they cannot compete with integrateds, not even close, without a really good interconnect, and an extra power cord or two. Separates make no sense, value-wise, even when the budget is huge. My system is pushing $100k and I wouldn't dream of separates. Waste of money! Some guys seem to be made of it. So watch out.

Since you're new to tube gear there's a few features to be aware of and watch for. Tubes are all biased, a small current that improves linearity. Some amps bias is automatic, others you have to set yourself. Its not a big deal, usually turn a screw or knob while looking at a meter, and doesn't have to be done often. But you do need to do this. 

Some amps run only one tube type, like say KT88, others you can use different tubes like KT88 & 6550C. While there are indeed differences between different tubes like this, and even between different brands of the same tube, still these differences are relatively small compared to the difference between different amps. Transformers have probably the greatest impact on sound, point to point wiring and design next, then tube type, and finally tube brand. Keep this in mind and it will help shopping and making sense of reviews.

Now all that said I would second and third the guys pointing you at the Rogue Cronus Magnum above. Ticks all the boxes, and then some, and close enough to your budget to be worth the stretch even if you can't quite get him down there. Good luck!
Jolida (or Black Ice as they're now weirdly named) makes great integrated tube amps...inexpensive new, and a can be very inexpensive used.

Rob, one way to go is to get the best power amp your money will buy, and put a passive "pre" in front of it. If your source output impedances are low enough, their output voltage high enough, your inter-connects short enough (more specifically, their total capacitance low enough), and the power amp’s input sensitivity and impedance high enough (the MR RM-10’s sensitivity is under a volt, it’s input impedance 100k Ohms, both making for an ideal candidate for a passive pre), you should be good to go.

No matter what amp you decide to go with, there is a great detailed description of what went into the design of the RM-10 on the Music Reference website. In reading it, you will get some insight into the choices an amplifier designer is faced with, things that don’t get talked about much: why a low impedance power supply is of benefit to a circuit, why "over-rated" parts are a real good idea (learned during Roger’s youth, when he started building amps in his family’s basement, his 3 years as a repair technician in a Virginia hi-fi shop, and as Chief Engineer at Beveridge), factors that go into the design and construction of a transformer (which has a profound effect on the sound of an amp), factors that effect tube life, not to mention what is involved in getting a tube to operate in it’s most linear range. Good stuff!

In a private email, you asked me about current solid state amps. About them I can be of no help, having only old ones (Electron Kinetics Eagle 2A, PS Audio 200C) myself. The only modern ss amp I find intriguing is the Sanders Magtech, which is way over your budget. What I can say is that given the Advent's impedance characteristics, and it's low sensitivity, I think you'll find a ss amp to be a better match than a tube one. Just one opinion. In the early issues of The Absolute Sound, Harry & co. were using a Phase Linear 700 on their Advents.

Dynaco made an amp called the MkIII that was a 60 watt monoblock. This turned out to be a good amount of power for the original Advent. You can still buy the MkIII as a kit (looks like this is for one channel):

http://www.triodeelectronics.com/trmk3tuampki.html