Markbass Mark Vintage Pre

EDIT: After using this preamp in many real life situations I noticed a problem with hum. I've added this to my review and adjusted my ratings.

I wanted an alternative to my EBS Valvedrive for gigs when I can't bring my own amp. Basically as a backup if the provided backline is either a poor quality solid state amp or non-existent (DI only).

Pros:

-Good clean tone.
-Nice tone controls with sensible frequency points.
-Dry/wet blend for the drive circuit is useful.
-Headphone out is great for practise.
-The external build quality seems to be sturdy enough for a life on the road.

Cons:

-I get a significant amount of hum with some basses unless I connect this preamp to grounded equipment. With some basses the hum is barely noticable but with others it is quite loud. These are basses that are dead quiet with other equipment. I can only assume this must be caused by the fact this Markbass preamp comes with an ungrounded electrical plug (touching the chassis of the preamp or any metal parts on the bass that are connected to ground will silence the hum). If you're plugging into an amp this won't be a problem as the amp will be grounded but this preamp is also marketed for recording (it has digital outputs for this). If you're connecting the preamp directly to an audio interface that is either usb-powered or has an ungrounded electrical plug (most interfaces do) and then use a laptop that also has an ungrounded plug (most consumer level laptops do) you have a problem. Bascially, if any other part of your signal chain is grounded you'll be fine. If not you may experience excessive hum.

-Although the clean tone is good it's not really THAT much better than going through any good quality on-stage DI-box. I'm not sure the clean tone alone is worth the price.

-The tube circuit sounds absolutely horrible when driven into even just a tiny bit of distortion. Forget about anything resembling a real tube amp driven hard, this pedal will only give you a fizzy, thin distortion. There is no gradual increase of distortion. You either get a nasty fizzy distortion or nothing. If you try setting the gain at the edge of distortion you will get a nasty, fizzy tone when digging in hard and a clean tone when playing softly. Also, the distortion feels like it sits "on top" of the clean tone, rather than being a part of it. Absolutely horrible and utterly useless.

-The drive section doesn't seem to go through the tube circuitry at all. It sounds like a rather muddy, cheap distortion pedal in one setting and a scooped, boomy mess in the other setting. The "distortion pedal"-setting can be useful for thickening the tone when blending in just a little bit with the clean signal but that's about it. I had expected more at this price.

-The three-way "preset" tone switch didn't do much for me. I only like the tone of this pedal in flat mode and find the other two settings "overcooked" and rather useless.

-The effects loop seems to be in parallell??? This could have been somewhat useful if it at least had a dry/wet blend knob but unfortunately it doesn't. It seems to be set for approximately a 50/50 blend which is completely useless for most situations. I honestly don't understand the idea behind this design. Effects that need to be blended with the dry signal (like reverbs) normally have an adjustable dry/wet setting anyway and a preset dry/wet mix in the effects loop is an almost unbelievably stupid design.

-If you have any plans about rolling tubes, forget about it. The tube seems almost impossible to replace. It's positioned in a way that won't let you get a good grip to pull it out and it also sits on a small circuit board that seems very fragile. I guess you MIGHT be able to pull the tube out somehow but I would be worried about breaking the connections to the main circuit board. It seems very fragile and the preamp is clearly not designed with tube replacement in mind. Not that I expect a diffent tube to make much different in a circuit like this but it would have been nice to at least have an opportunity to try.

-Personally I don't understand the point of the digital outputs. It's pointless for use on stage and I don't see why anyone would need it for recording either. Anyone who owns an audio interface will have digital converters already. What's the advantage of using these digital outputs? I strongly doubt if the converter in this pedal is of better quality than the converters in even the cheapest audio interfaces available today. I feel like I'm paying for something I don't need here, and I suspect most bass players who might be interested in this pedal won't need these digital outputs either.

To sum it up: If you want a preamp with a good CLEAN tone and nice (but very basic) tone controls, this pedal might be a good choice. However, if you want something that can give your tone a bit of dirt without sounding fizzy or if you need a usable effects loop or if you want to be able to change the tube without the risk of damaging the circuit board... Forget about it. You won't find these things here. This pedal may seem to have a lot of features but most of them are pretty useless.

I'm only keeping this pedal because of the headphone out. It's nice for silent practise and the hassle of a return (customs paperwork, VAT refund) just isn't worth it. I would definitely not buy it again though.

The unit doesn't sound bad when you limit the mid high and high boost, but when you go over about 50% boost you often run into trouble. I also lost a lot of definition when I had the eq set neutral. It's also pretty noisy with about 50% gain on the tube stage, which is the minimum to get that sweet tube compression.

My guess is that the gain staging, with first the tube and then the eq is too much, or just not designed right. Not a keeper.

I find it a bit strange that the effects loop send is placed on the left side while the return is on top. Even more unusual is the routing: the loop is post-drive but pre-EQ, which means if I put a cab sim in the loop, the EQ still comes after it. I’ve never seen that before, though maybe I just haven’t looked closely at other designs. It works, but it feels counterintuitive.

That said, after spending time with the pedal and gathering feedback from other players, here’s a breakdown of the pros and cons of the Mark Vintage Pre:

Pros:

Solid clean tone – the preamp delivers a warm, articulate sound that works well in many contexts.

Useful tone controls – the 4-band EQ hits sensible frequency points, allowing precise shaping.

Drive with blend control – makes it easier to dial in grit without losing low-end clarity.

Headphone output & AUX-in – excellent for silent practice and direct monitoring.

Rugged build – road-ready construction with sturdy knobs and jacks.

Connectivity options – DI with transformer, digital outputs (RCA/Toslink), FX loop, and true bypass make it versatile for both live and studio use.

Compact “all-in-one” solution – great for players who want a portable rig without carrying an amp head.

Cons:

Unusual FX loop design – send on the side, return on top, and routing that is post-drive but pre-EQ feels unintuitive for some setups.

Drive/distortion quality – many users find it thin or fizzy compared to other preamp pedals.

EQ presets (Flat, Cut, Old) – considered limited and not dramatically different.

FX loop behavior – seems to work more like a parallel loop without a dry/wet mix, reducing flexibility.

Noise issues – noticeable hum when connected to ungrounded gear (like laptops or some audio interfaces).

Tube replacement – the 12AX7 is very hard to swap, and doing so risks damaging the board.

Digital outputs – useful in theory, but often redundant if you already have an audio interface.

Price-to-feature ratio – some features feel like gimmicks, making it expensive for what it delivers.

Conclusion

The Markbass Mark Vintage Pre is a versatile and powerful preamp pedal, delivering warm tube-driven tone, strong EQ shaping, and plenty of modern connectivity in a compact format. It’s especially useful for players who want a practice + performance solution with headphone out, AUX-in, and DI all in one box.

Still, the FX loop design quirks, average-sounding drive, and potential noise issues hold it back from being perfect. If you value portability and clean tube tone above all, it’s a strong option. But if you need flawless distortion, more intuitive routing, or maximum value for money, there are alternatives worth exploring.