Tube amps under $7500


Ready to experiment with combinations never before (or not recently) tried. Step one requires a tube amp. Now looking at Prima Luna EVO 400 which sells for 5K. Any other tube amps I should consider in this price/feature range? Must come in silver with balanced input. For pairing experimentally with various tube and SS preamps. Efficient 4 ohm Legacy speakers (and the room/setup) are the constants.

 

hickamore

Depending upon the amp tube biasing can take all of a couple of minutes so maybe consider that

 

 

 

You are correct on your assessment of Rogue. I would look at used Audio Research like the Ref 75SE. Or actually a used VT80… even better. It has auto biasing. I do not tube roll with ARC, they are designed for a very specific natural, musical sound… carefully matching real music.

+1 to VAC and Conrad Johnson. These all are higher end solutions.

Biasing: thing is, power amps are huge and heavy and live in a dark spot down by the floor where I would need to crawl like a reptile with a flashlight more often than I find comfortable for normal maintenance jobs.

Biggest reason to avoid tube amps, at least in my case…

1. relatively short life of power tubes (around 2000hrs)

2. cost of maintenance

3. tube rolling - too many choices, aggravates OCD

4. every noise the system makes - tubes are first to get blamed

5. every listening session that results in less than satisfactory experience - tubes are the first in line of usual suspects

With that said, I thoroughly enjoyed my time with the ST-100. It’s a great sounding amp. Very quiet, resolving and dynamic. However I am done with tubes for time being.