Sanscardinality said:
[...] the Fender Princeton Reverb Reissue - especially if you are going to get dirty with pedals and want lush, articulate cleans. It blows the blues junior, blackstar, etc. away on clean tones and the reverb and tremolo are gorgeous. I don't know if it's just tubist puritanism, but the tube rectifier does seem to make a difference.
Fenders are tough to beat for clean tones. They're the standard by which all others are judged. Some sound better, many sound worse, but you can't argue with Fender cleans. They're essentially copies of reference circuits designed by tube manufacturers, and if anybody knows how those babies should work their best, those guys do.
However, the whole "tube rectifier" thing should be renamed the "rube rectifier", to more accurately reflect its audience. How that part has gained such mythical proportions as to its effect on tone is a mystery for the ages. It sure sells amps, though. Some companies even offer
multiple tube rectification circuits, so as to attain the "most badass" designation in amp folklore amongst long-haired, spandex-wearing teen-age and twenty-something rock star wannabes who don't even know what a rectifier is or does.
To be clear, I'm not saying they
don't have an effect. But, when and how is widely misunderstood.
Tube rectifiers as applied in guitar amps are often current limiters, because the power supply generally isn't designed to deliver as much current as the amplifier section(s) may ask for. It costs too much money and makes possible a signal fidelity that isn't often required or even expected. As a result, if the amplifier asks for more current than is available, the voltage sags. This has an effect on the output which mainly manifests itself in the form of a frequency-dependent compression.
The thing to remember is that this
only happens when the amp is near or at full-tilt boogie. You have to be asking for more current than the power supply can deliver due to rectifier tube current limiting. Anything less, and the effect is non-existent. Also, whether the effect is present or not, you're still running a highly inefficient part that's adding cost, weight, maintenance and an easy failure point to a piece of gear that already doesn't need much of an excuse to fail.
You could just as easily install a low-resistance high-wattage resistor in series with the supply and get the same effect without the cost, weight, or short MTBF. But, that wouldn't sound as good on the cut sheet, so the marketing weenies won't hear of it.