When you think of REVV Amplification, chances are your mind immediately goeREVV Dynamis 7-40 Review: Vintage Tone Meets Modern Control
Sometimes a piece of gear surprises you for reasons you didn’t expect. When I bought the REVV Dynamis 7-40, I was already expecting the clean channel to be good. That was the part of the amp I’d heard people praise, and it was one of the main reasons I was interested in the Dynamis in the first place.
After spending a couple of months recording, rehearsing and gigging with it, though, the clean channel isn’t actually the biggest surprise. That honour goes to the drive channel.
REVV is probably still best known for its modern high-gain amps and pedals like the G3, so the Dynamis sits in a slightly different corner of their lineup. Instead of chasing tighter and heavier sounds, the Dynamis 7-40 goes in a more vintage-oriented direction while keeping the kind of flexibility REVV amps are known for.
That combination is what makes this amp so interesting. Underneath all the MIDI control, presets and clever switching is still a great-sounding tube amp that responds to how you play.
And after living with it for a while, I can quite simply say that I love this thing.
A Different Kind of REVV Amp
The REVV Dynamis 7-40 is a two-channel tube amp with 6V6 tubes in the power section. Both channels can be switched independently between 40 watts and 7 watts, so you can run the clean channel at full power while keeping the drive channel at 7 watts, or vice versa.
There is a clean channel and a drive channel, but calling it a basic two-channel amp doesn’t really tell the whole story.
Both channels have their own three-band EQ, volume and reverb controls. There are independent Bright switches, while the drive channel adds the three-stage Dynamic control and Contour switching. Around the back you get multiple speaker outputs, an effects loop with adjustable send level, MIDI input, the footswitch connection, external bias points and even a connection for REVV’s cabinet lighting system.
There are also Normal and Low inputs on the front. According to the manual, the Low input is especially useful with very high-output pickups if you want to preserve as much clean headroom as possible.
None of those things would matter much if the amp was annoying to operate, but that’s one of the things REVV got right. There is a lot going on here, yet the Dynamis still feels like a normal guitar amp.
You don’t need to dig through menus. You don’t need an app. Most of the time, you turn the knobs until it sounds good and play.
The clever stuff is there when you need it.
My Custom Carbon Tweed Dynamis
My Dynamis was custom ordered, so I got to choose how the amp looked.
I went with what REVV called Carbon Tweed, combined with a white front panel and white knobs. Carbon Tweed looks a bit like dark grey traditional tweed, but it’s actually tolex.
I really like that combination. You get the visual character of tweed without quite the same tendency to collect every piece of dirt that happens to exist within a five-metre radius of the amplifier.
The white panel and knobs finish the whole thing nicely, and even after owning plenty of guitar gear over the years, this is still one of those amps I occasionally look at and think, “Yeah, that looks really cool.”
There’s also a large illuminated REVV logo that changes colour depending on the channel. If you happen to own a compatible REVV cabinet, the amp can control its lighting as well so the cabinet changes colour with the amp.
Is that necessary?
Not even slightly.
Do I still think it’s cool?
Absolutely.
Build Quality
The Dynamis is built in Canada, and overall the build quality feels excellent.
The enclosure is solid, the knobs feel good and the amp gives you the impression that it has been built to survive actual use rather than just sitting beautifully in a studio.
There is one small exception that I’ll come back to later: some of the little push switches don’t feel quite as premium as the rest of the amplifier. I don’t think they’re about to fall apart, but they’re probably the one physical part of the amp I would change.
Otherwise, this thing feels extremely well made.
The external bias points around the back are also a nice practical touch if you know what you’re doing. You don’t have to start taking the amp apart just to access the measurement points when it’s time to check or adjust the power tubes.
40 Watts or 7 Watts on Either Channel
One of the most useful features of the REVV Dynamis 7-40 is right there in the name.
Each channel can run at either 40 watts or 7 watts, and the setting is independent for each channel.
The 40-watt mode gives you more headroom and obviously more available volume, which makes sense for live use. However, the 7-watt setting isn’t simply there to make the amp quieter.
It also lets you push the power section harder.
That’s particularly interesting on the clean channel because there isn’t a traditional gain control. If you want the clean channel to break up naturally, you can switch down to 7 watts and start pushing the volume.
What you get is real power amp distortion rather than a preamp trying to simulate the same thing.
It’s still not whisper quiet. Seven tube watts can be surprisingly loud. However, it’s much easier to reach that sweet spot than it would be with the full 40 watts available.
For recording, I really enjoy having that option.
Recording the REVV Dynamis
For the original demo, I ran the amp into my Two Notes Torpedo Live and used a REVV closed-back 4×12 cabinet IR.
My main guitar for the test was my self-made VHC semi-hollow guitar with Sheptone 6T8 pickups. It’s a fairly dark-sounding guitar, which actually made it a useful test because not every amplifier responds particularly well when I start trying to compensate for that darkness with EQ.
The Dynamis did.
In fact, this combination turned out to work surprisingly well throughout the whole demo.
The Torpedo Live also makes the Dynamis particularly practical for my home studio because I can use the real amplifier without necessarily needing to bring a cabinet into the equation every time.
That same idea has worked well for rehearsals too. If I have a suitable direct setup available, I can take the amp without automatically having to drag a cabinet along with it.
The Clean Channel Is Really, Really Good
The clean channel was the part of the amp I had the highest expectations for.
Henning Pauly has praised the Dynamis clean channel very highly, and while I haven’t played anywhere near the number of amps Henning has, I can understand why he likes it so much.
It has clarity without becoming sterile.
There’s plenty of headroom when you want it, but it doesn’t feel like some completely neutral platform where your guitar goes in one end and simply comes out louder at the other. The channel still has character.
That matters.
A technically perfect clean tone isn’t necessarily an inspiring clean tone. The Dynamis feels alive underneath your fingers, and simple chords can sound surprisingly satisfying before you’ve added a single pedal.
Move to 7 watts and start pushing the channel harder, and things get even more interesting. The clean tone gradually starts to break apart and you can get some lovely natural tube overdrive directly from the power section.
So although it’s called the clean channel, it definitely doesn’t have to stay completely clean.
The Bright Switch Is More Useful Than It Sounds
Both channels have their own Bright switching, and this became particularly useful with my VHC guitar.
As I mentioned, that guitar is naturally dark. With some amps, fixing that means pushing the treble and presence controls until everything else starts sounding wrong.
The Bright switch on the Dynamis gives me another option.
It adds that extra bit of top-end attack and what I rather scientifically described in the original video as some extra “spank.”
That’s still probably the best description I have.
Importantly, it doesn’t suddenly turn the amp harsh. It just opens the sound up a little, which can be exactly what a darker guitar needs.
Because the setting works independently between the channels, you can use it where it’s useful instead of having to compromise both sounds.
The Built-In Reverb Is Excellent
I wasn’t expecting to spend this much time talking about an amplifier’s built-in reverb, but the one in the Dynamis deserves it.
Each channel has its own reverb level, while the decay can be changed between different settings. More importantly, those settings can behave independently between the channels.
That means I can have a fairly big ambient reverb on the clean side, switch over to the drive channel and have a much drier sound waiting for me.
For live use, that is incredibly convenient.
The reverb itself is also more interesting than I expected. Especially with longer decay settings, I hear something in the tail that almost reminds me of a subtle delay. It creates this spacious quality without sitting directly on top of the dry sound.
That’s probably why I find it so usable.
You can turn it up enough to get genuinely ambient clean sounds, but it doesn’t immediately wash away the guitar. If you want something more restrained, the shorter decay setting sits much farther in the background.
I’ve used plenty of amps where the onboard reverb feels like something you use until you buy a reverb pedal.
With the Dynamis, I would happily use the built-in reverb at a gig.
The Drive Channel Is the Real Surprise
This is where the Dynamis really caught me off guard.
I bought the amp expecting the clean channel to be the star. I knew the drive side should be good, but I wasn’t prepared for how much I would like it.
The basic character has much more of that classic British thing than the modern high-gain sound many people associate with REVV.
To my ears, there is definitely some Marshall-ish DNA going on here.
It has a strong midrange, plenty of bite and that kind of crunch where power chords feel big without becoming a wall of compressed distortion. More importantly, it responds extremely well to how hard you’re playing.
Back off and it relaxes.
Dig in and it gets angry.
That’s exactly what I want from this kind of amp.
Three Dynamic Settings
The drive channel has three Dynamic settings, and these effectively give you three different stages of gain and response.
At the lower setting, the amp stays more open and dynamic. This is a great place for classic rock tones, bluesier sounds or anything where you want the guitar’s attack to remain very obvious.
Move through the settings and the sound becomes progressively more saturated.
The highest Dynamic setting gives you substantially more gain and sustain without suddenly turning the Dynamis into a completely different amplifier. The underlying character is still there.
That’s important because sometimes multi-mode amps feel like you’re jumping between several unrelated preamps.
Here it feels more like you’re pushing the same basic amp harder.
The Contour Switch
The Contour switch changes the voice of the drive channel even further.
The easiest way I can describe what I hear is that it seems to move where the midrange sits. The whole character shifts rather than simply becoming brighter or darker.
Combined with the Dynamic modes and regular EQ, this gives the drive channel a surprisingly large range.
While experimenting with it, I found myself getting into tones that reminded me of Judas Priest without even adding a boost.
That probably tells you roughly where the natural gain range of the amp lives.
It’s not a modern metal amp.
It’s also not trying to be one.
Can the Dynamis Do Metal?
If your idea of metal involves extremely saturated, tightly controlled modern rhythm sounds, the Dynamis wouldn’t be my first recommendation.
REVV makes other amps specifically for that.
However, if your definition includes classic heavy metal, hard rock, hair metal and the heavier side of the ’70s and ’80s, the Dynamis gets surprisingly close.
Think more Van Halen and Judas Priest than modern djent.
That’s the territory where I think this amp makes the most sense.
And if you want to push it a little further, it responds beautifully to an overdrive in front.
Boosting It With the Caline Pure Sky
During the demo, I grabbed my Caline Pure Sky and used that to push the drive channel.
I set the pedal with relatively little gain, added some treble and removed a bit of bass. In other words, I was using it more as a boost and tone shaper than as the main source of distortion.
The Dynamis loved it.
The bottom end tightened up, there was a little more attack, and the amp moved farther into classic heavy rock territory without losing its basic character.
I’ve talked about the Pure Sky plenty of times on this site, and I still think it’s a ridiculously useful inexpensive overdrive. If you’re interested in that pedal specifically, I have a full Caline Pure Sky review elsewhere on the site.
More importantly for this review, the test confirmed something I’ve noticed repeatedly with the Dynamis:
This amp takes pedals really well.
Using the Dynamis as a Pedal Platform
For me, this matters a lot.
I review pedals, so I need an amp that gives them enough room to do their thing. An amplifier that imposes too much of its own character on everything can make different pedals start sounding more similar than they really are.
The Dynamis has enough personality to be enjoyable on its own, but it doesn’t fight the pedals I put in front of it.
Overdrives work beautifully.
The clean channel gives you an excellent foundation for distortion pedals.
The effects loop gives you a sensible place for delays, reverbs and modulation when you want them after the amp’s gain stages.
That makes the Dynamis incredibly useful in a studio built around gear demos.
I can use the amp’s own tones when that’s what I’m interested in, or turn it into a platform for something else.
The Footswitch Is Much More Than a Channel Switch
Then we get to one of my favourite features on the entire amp: the footswitch.
At first glance, it looks like a fairly substantial amplifier foot controller. You can obviously switch between channels, but it also gives you control over the Dynamic setting, reverb, effects loop, subtle solo boost and global mute.
That’s already a lot more useful than the typical two-button channel/reverb footswitch.
But there’s another mode.
Hold the appropriate footswitch and the controller changes into preset mode. All six switches can now become individual presets.
This completely changes how practical the Dynamis is on stage.
Six Presets Without Turning the Amp Into a Modeler
The clever thing about the preset system is that the Dynamis doesn’t suddenly pretend to be a digital modeler.
Your physical knobs stay physical.
The amp stores the switchable states rather than memorising every knob position.
Initially, that can sound like a limitation. After using it live, I think it’s actually a really sensible decision.
Imagine storing six presets with six completely different volume settings. You arrive at another venue, discover the room requires a different overall level, and suddenly you need to edit every preset individually.
With the Dynamis, you set the physical volume for the room and your presets work around it.
The same applies to EQ.
If I switch to a different guitar and need to add a little treble, I adjust the channel once. I don’t have to go through every sound and rebuild it.
There are obviously limits to this system. You can’t save one preset with the gain knob at three and another with the gain knob at eight.
But that’s also why the Dynamis remains so easy to operate.
It’s still an amp.
Enough Presets for an Actual Gig
Six sounds might not sound like much if you’re used to modelers containing hundreds or thousands of presets.
For me, six is plenty.
I’ve already used the Dynamis for gigs with essentially just the amp and its footswitch because I can create the sounds I actually need without building a huge rig.
You could have a basic clean sound, an ambient clean, a crunchy rhythm tone, a heavier rhythm sound, a lead tone and still have one preset left.
For most gigs I play, that’s more than enough.
And because you’re not scrolling through banks of presets, everything remains incredibly immediate.
About the Solo Boost
One thing initially confused me during the demo.
The footswitch has a solo boost function, and when I first tried it on the clean channel I could barely hear anything happening. I actually wondered whether something wasn’t working correctly.
So I asked REVV.
It turns out the boost isn’t designed to suddenly throw another 10 or 20 dB at the output. It’s much more subtle than that. It gives the channel a little extra push, and the effect is more noticeable on the drive channel.
Once I understood what it was supposed to do, everything made sense.
So no, mine wasn’t broken.
I just expected the words “solo boost” to mean something more dramatic.
MIDI Control Opens Up Even More Possibilities
If six presets aren’t enough, or you already have a more elaborate pedalboard, the Dynamis also supports MIDI control.
This is where things can get really powerful.
For one of my live setups, I used a BOSS MS-3 as the control centre. With a system like that, one button press can change something on the amp while simultaneously switching pedals and effects elsewhere in the rig.
You can go from a clean ambient sound to a driven rhythm tone without doing the familiar pedalboard tap dance.
The funny thing is that the included REVV footswitch works so well that I don’t always feel the need to build the complicated system.
I like having both options.
A Couple of Things I Would Improve
No amp is perfect, and there are a couple of things I would change on the Dynamis.
The main one is those small push switches.
Some feel better than others, but the switches that spring back can occasionally be a little awkward to press. The Contour switch on mine also needs to be pushed reasonably straight. If I hit it from a strange angle, it doesn’t always engage.
I don’t think they’re fragile, and I haven’t personally seen evidence that they’re a reliability problem.
They just don’t feel quite as substantial as the rest of the amplifier.
If I were redesigning the original Dynamis, slightly larger, more solid-feeling switches would be on my list.
The LED Problem and REVV Customer Support
My amp also developed a slightly strange LED issue.
The Bright function itself worked, but the indicator LED became intermittent. Sometimes it illuminated correctly and sometimes it seemed to have other ideas.
Something may have happened during shipping.
I contacted REVV, and they immediately started arranging replacement parts for me. Their handling of the whole thing was excellent, so I don’t really count it as a major negative against the amp.
Things can break.
What matters is what happens next.
In my case, the support was exactly what I would want from the company that built the amp.
As a slightly ridiculous side note, when this particular custom amp was finally finished, REVV used very fast shipping because the original delivery had already taken longer than expected. It travelled from Canada to Finland in roughly 36 hours.
I still don’t quite understand how that happened.
The Dynamis in Real-World Use
After about two months with the amp at the time of the original review, I had used it extensively enough that the initial excitement should probably have started wearing off.
It didn’t.
If anything, I liked it more after learning how everything worked.
I had recorded with it, used it in plenty of videos, taken it to rehearsals and played gigs with it.
That’s where the versatility really started to make sense.
The Dynamis isn’t versatile because it tries to sound exactly like twenty different amplifiers. It’s versatile because the two channels cover a genuinely useful amount of ground and REVV gives you enough control to make those sounds work in different situations.
There’s a difference.
Vintage Sound With Modern Control
The best way I can describe the REVV Dynamis 7-40 is as a marriage between a traditional tube amp and modern control.
The sounds themselves feel analogue.
The amp responds to your hands. It reacts to different guitars. You can work the guitar’s volume control, change how hard you’re picking and hear the amp move with you.
Then, behind all of that, there’s digital control handling the practical stuff.
MIDI.
Preset switching.
Channel-specific options.
Reverb settings.
Effects loop switching.
You get the convenience without having to interact with the amp like a computer.
That’s the magic of the design for me.
What Surprised Me Most About the REVV Dynamis
If you had asked me before I got the amp which channel would be my favourite, I would have said the clean channel.
And the clean channel is fantastic.
It really is.
What I didn’t expect was just how good the drive channel would be.
It’s exactly the sort of more Marshall-ish rock tone that I enjoy. There is enough gain to cover almost everything I personally need, yet it never feels like REVV simply took one of its modern high-gain designs and turned the gain knob down.
The Dynamis has its own personality.
For classic rock, hard rock, blues, worship, AOR and older-school heavy tones, I think the drive side is one of the strongest things about the entire amp.
That was the surprise.
The Original Dynamis 7-40 Today
One important thing has changed since my original experience with this amplifier.
The exact Dynamis 7-40 reviewed here is no longer the current model. REVV has since moved the Dynamis line forward with the newer D40.
The current D40 isn’t simply the 7-40 with a new name. REVV redesigned the concept significantly, including a different power section and modern direct-recording features.
Because of that, everything in this review should be read specifically as my experience with the original REVV Dynamis 7-40.
If you find one on the used market, I still think it’s an extremely interesting amplifier. In fact, the combination of the 6V6 power section, 7-watt mode and original switching system gives it its own identity rather than making it merely an obsolete version of the newer amp.
The D40 carries the Dynamis idea forward, but they aren’t the same amplifier.
REVV Dynamis Review: Final Thoughts
The REVV Dynamis 7-40 is one of those pieces of gear that simply fits the way I work.
For recording, it’s excellent. The clean channel gives me a fantastic pedal platform, while the drive channel covers the classic rock tones I naturally gravitate towards.
For gear demos, it works with practically everything I plug into it.
For rehearsals and gigs, it’s light enough that I actually want to take it with me, and the six-preset footswitch can cover an entire set without requiring another switching system.
And if I do want to build a more elaborate rig, MIDI is already there.
There are small things I would improve. The push switches could feel more substantial, and my amp had that strange LED issue. Neither has changed how I feel about the amplifier as a whole.
The clean channel is every bit as good as I hoped.
The built-in reverb is far better than I expected.
The 7-watt mode is genuinely useful.
The footswitch and preset system make a huge difference live.
But the drive channel remains the part that surprised me most.
I expected a great clean amplifier with some useful drive sounds attached.
What I got was an amp where I genuinely love both sides.
And after using it for recording, rehearsals, gear demos and gigs, that’s ultimately what makes the Dynamis special to me. It’s not trying to replace every amplifier ever made. It simply gives me the sounds I actually want, combined with modern features that make those sounds easier to use.
Sometimes that’s a much better kind of versatility.
You can check out the gear mentioned in this post through the affiliate links below. Using them does not cost you anything extra, but it helps support isthisgeargood.com and keeps the lights on around here.
Since publishing the original review, the Dynamis 7-40 has been discontinued and it has been replaced by REVV D40, which you can find here: https://thmn.to/thoprod/581657?offid=1&affid=394
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