^^^
I've posted about running my 400 Watts @ 4 Ohms Handbox R-400 with a single Hathor 1203 or a 2x12 Hathor/Changeling stack. That head, IMO, sounds and feels great with those cabs, but it will run out of steam, if things get loud, a fair bit sooner than the cabs will and sooner than a higher-powered head will with those cabs. (If we assign a subjective RPE (Rate of Perceived Effort) to the rig, I feel like the head at "9 - 10" will take the cabs to "6" or "7").
I've played through the Shuttle 3.0 on a few occasions, but only with the 8T and 10T Genz cabs that it was paired with while it was made. Nice, clean, little amp, with a fairly neutral voice (reminds me, a bit, of an EA Doubler), but @steve_rolfeca is right that it's high-passed higher than the other Shuttle heads (I think it's HPF-ed higher than the 6.0, which is, in turn, HPF-ed higher than the 6.2, 9.0, and 9.2, which are all, I think, pretty similar in sound and feel).
When you say that you tried it and liked it, @Texican, was that with your cab? 300 Watts through the moderately efficient (~97 dB/W/m) Changeling 212 will, I think, cover a lot of gigs if your expectations are reasonable and if you're coasting easily, now, with the 500 Watt Rumble head -- and the way it's high-passed (due in part to being paired with the small Genz combo cabs) will help it to make the most of that power -- but you could find it running out of steam if things get hairy (where, exactly, that'd happen and what that means for you, I can't say).
As for the HPF and the way the deep lows are shaped, try it with your cab if you can. You might find it a bit high or you might really like it.
If you dig it but want more juice (and deeper lows) you could look into the other Shuttle heads (or the Genzler Magellan heads).
Note: the "LF Boost" button on the 3.0, if it works the way it does on my big GBE 1200 (and, I suspect, the other Shuttle heads) does, will give you a little bump in the bass and roll the HPF corner frequency down some. You might find that you prefer the low-end voicing that way, but it will also eat up some of the head's 300 Watts to push those lower frequencies.
I've posted about running my 400 Watts @ 4 Ohms Handbox R-400 with a single Hathor 1203 or a 2x12 Hathor/Changeling stack. That head, IMO, sounds and feels great with those cabs, but it will run out of steam, if things get loud, a fair bit sooner than the cabs will and sooner than a higher-powered head will with those cabs. (If we assign a subjective RPE (Rate of Perceived Effort) to the rig, I feel like the head at "9 - 10" will take the cabs to "6" or "7").
I've played through the Shuttle 3.0 on a few occasions, but only with the 8T and 10T Genz cabs that it was paired with while it was made. Nice, clean, little amp, with a fairly neutral voice (reminds me, a bit, of an EA Doubler), but @steve_rolfeca is right that it's high-passed higher than the other Shuttle heads (I think it's HPF-ed higher than the 6.0, which is, in turn, HPF-ed higher than the 6.2, 9.0, and 9.2, which are all, I think, pretty similar in sound and feel).
When you say that you tried it and liked it, @Texican, was that with your cab? 300 Watts through the moderately efficient (~97 dB/W/m) Changeling 212 will, I think, cover a lot of gigs if your expectations are reasonable and if you're coasting easily, now, with the 500 Watt Rumble head -- and the way it's high-passed (due in part to being paired with the small Genz combo cabs) will help it to make the most of that power -- but you could find it running out of steam if things get hairy (where, exactly, that'd happen and what that means for you, I can't say).
As for the HPF and the way the deep lows are shaped, try it with your cab if you can. You might find it a bit high or you might really like it.
If you dig it but want more juice (and deeper lows) you could look into the other Shuttle heads (or the Genzler Magellan heads).
Note: the "LF Boost" button on the 3.0, if it works the way it does on my big GBE 1200 (and, I suspect, the other Shuttle heads) does, will give you a little bump in the bass and roll the HPF corner frequency down some. You might find that you prefer the low-end voicing that way, but it will also eat up some of the head's 300 Watts to push those lower frequencies.
