Udo Terlisten
15/03/2020

A No-Brainer

Very easy to build,easy use plus some nice extras (HF) compared to the originals.
Sounds exactly the way I wanted it to hear.
Have built two of them meanwhile.Looking at the kit price this is a no-brainer.
Highly recommended!

JG Teheux
12/02/2020

Fabulous "1073"-inspired 500 Series preamp

Fantastic "1073"-style preamp kit for the money! Does everything you could hope this type of pre would do, with the bonus of a great integrated DI, all in the very popular 500 Series format with its many benefits (and no disadvantage, provided you use a good rack with a proper PSU).
The reason I chose SSK over the other popular options (AML, Don Classics, Heritage, AMS Neve, Golden Age Project, Warm Audio...) were :
- fantastic value for the money (partly thanks to the kit form) : for the price of an entry-level clone (GAP...) you get a top notch one (similar in sound quality to other listed above except Warm Audio which I found inferior although better than GAP).
- ease of build, great documentation, all components included in one single order (not the case with Don Classics)
- easily replacable, discrete components (not the case with AMS which has lots of SMD)
- can form a complete "1073" channel strip when combined with the SSK EQ573 module, or used independently : depending on the task at end you can quickly put or remove the EQ from your 500 Series rack (not the case with AML, Don Classics, or Heritage whose EQ doubles up on transformers so less flexible).
- formidable, unparalleled after-sale service by Jean-Pierre of SSK (should you run into any trouble)
The only two things I wish it had on top of that would be an output trim pot providing full attenuation or at least 20dB) and some sort of HPF (as on the Heritage HA-73jr), but these are more small details than real quibbles regarding what you get for the money which I think is unbeatable!
Thanks SSK and JPK for the fantastic kit and support!

Philipp Wilfinger
23/12/2019

Great Sound

Have 4 573s:
Great Preamps!!
Had fun building, Great support as always,
They sound fantastic!

Philipp Wilfinger
23/12/2019

Great Monitor Controller

I was looking at the options out there for monitor controllers with stepped relais. The only ones that would have been interesting would have been arround €3000+
The 624 is the perfect alternative if you like me dont need any digital I/O.
Have worked on mine for over 2 years now - very happy!

Henry
19/12/2019

Best DIY 1073 Clone out there

If you are like me and were trying to decide between this and the AML EZ 1073 for your studio, I've got good news: you came to the right place.
I haven't personally tried the Ez1073 but from others I've heard that the MP573 sounds fatter and phat it sounds.
Additionally, the MP573 has a DI input which is very useful, and it accepts line level input with a flick of a switch- amazing!.
I can't think of a negative thing really, except the output knob could be a bit sturdier as it wobbles slightly, but that doesn't change the sound or the quality of the other parts.
Just phenomenal! I hope Jean-Pierre will make more kits. Merci!

DTP
24/10/2019

Great kit!

Great layout, great documentation, great price and of course the most important thing: GREAT sound!

Next up is an LA502, a pair of EQP501's and a CP4500. Based on this kit, I'm pretty confident those won't disappoint me at all.

Holger Classen
18/10/2019

Excellent Controller

The monitor controller is excellent, much better than my old one. Pristine, clear, wonderful. Recommended.

jeff buet
11/09/2019

Ce qu'il me fallait!

Je chrechai un preamp style API512 mais le prix etait prohibitif donc je me suis dis que je pourrai essayer le diy de chez Soudskulptor,et j'y suis arrivé.Pas forcement evident de commencer le diy audio electronique en commençant par un preampli mais avec le explication et le kit pas de soucis,ça a marché.Et je vais continuer avec un autre preamp et les compresseurs et eq après,ça y est j'ai le virus! Merci a Soundskulptor pour ses kits géniaux!

Daniel McM
10/05/2019

Easy build and great useability

A bit scared off by the component count and being the first time soldering on a PCB, it took me surprisingly only 8hrs to finish this build, although I highly recommend a good iron and following the instructions closely.
The calibration worked great too.
The sonic quality is very good to my ears and flexible for all different kinds of soundsources.
It does subtle works for most of its uses, but this unit is also not meant to radically change your track! Just giving it the final polishes and nice overall glue.

Frans Stummer
16/04/2019

Does things other preamps do and then some more

How do you evaluate a preamp? I would sort them between the two extremes of "having no sound at all" and having "a lot of sound". The MP 5.99 has not that much of an own sound. That in itself it neither good nor bad, it just tells what it CAN do versus what it can not. For example, softening a sound or pushing it to overdrive with a gradual slope into creamy, buttery overtones.. it does NOT. The MP 5.99 keeps the input sounding muscular and quick, if it's not a mic on a cottonball, see? Let's have a look at the other end of the "preamp-color-chart", a completely 'transparent' preamp, transformerless on input and output, superfast slew rate, super high bandwidth, etc. etc.: these, albeit toutet as desirable, or "true" or "hifi" or whatever lipstick you want to put on them.. are (at least in my world) close to useless without a tape machine. Why? Because they work well on signals that are already close to perfect sounding and at a good distance. Like an orchestra. Put these type of preamp on a snare close mic in a digital recording and what you get is transient hell, spiky, useless, unmusical, anemic. To make sense with such a signal in a mix needs an iron fist, a compressor, a sledgehammer and time on your hands to get all the work done that gain staging or the right preamp (or the transient-eating habits of tape) would have done for you. Me, I'm lazy. I want the signals to be recorded like they will work in the mix. Making desicions now, not later. Not fixing it in the mix. More work at mixdown? NO.
Here is where the MP 5.99 fills a gap that not many preamp makers even seem to recognize: It is clean AND it has transformers in and out. So you can use it on close-miked sources. Even on very, very loud close miked sources. This preamp can take a beating. Where most other preamps with transformers on input need a pad, (which - depending on the mic - will surprise you with a change in sound as well…) the transformer on the way in with the MP 5.99 swallows (shuffling through datasheets..) 10dBU @ 50Hz with just 1% distortion. That's practically line level, kids. You can even jumper the input transformer from 1:5 to 1:2,5 for a little less gain and more headroom. That's like "more cowbell", just better (if you don't get that, do the search engine) It doesn't stop here - another jumper on the output transformer makes it go from 1:2 to 1:1. I'm not even halfway through and there's already a few features you won't find in 99% of all the other preamps in the world. It has a pad with a potentiometer after the transformer, so you can cook the signal a little on the way in .. and turn the output down after the transformer. (insert a few four-letter words here) (or how about "Holy mackerel, Batman!!") Excuse me, if I get a little technical here, but the folks behind SoundSkulptor were thoughful enough to do an Opamp that is friendly with low input impedance. Yes, because of that it can have a low-ratio input transformer and because of that it can take levels that tear your face off. Bravo! (applause!) Thank you, SoundSkulptor! Not only can I use the MP 5.99 on super loud kick and snare without worries, but also on condenser mics with notorious high output. (which includes the usual U47.. and a few hundred others) With the benefits of transformers inbetween. To my best knowledge, there aren't even half a dozend preamps in the world who pull that off….more like, three others. But even these don't got the output-pad… or the super-duper-handy gain range switch. (biaaatch!) (just for rhyming, okay?) What does that switch do? A) low (=input pad, if your signal is broadcast-level line) B) mid (pure gold!!!) C) high (oh, that's what all the other preamps do anyway) So, why is that switch soo handy? Use it with 'mid' or 'high' and when you play it back, you can use it as kind of a mute button, switching it one down to keep the chatter from the tracking room out.
I already got a few other preamps that can do the 80-dBs-of-gain-until-you-puke without the slightest hint of noise, so putting a ribbon mic on a mouse pissing on a cotton ball and getting that up to 0dB on the A/D with +24dBU is no problem. I got a few mid-gain preamps as well (around 40-60dB) .. and I got a few tube preamps that can go from hifi-clean to a marshall full stack inbetween. I didn't have a beast like the MP 5.99.
It starts with very low gain, not with - for example - already at +30dB you find on other preamps. To sum it up: it's a tool that helps you with tasks where your usual preamps don't go. You could use it as the only preamp on an island as well, but then you would need a pretty long extension for your power strip. Soundwise, all is fine. Let me add that I am spoilt with gear, having preamps by Manley, Telefunken, JLM Audio and a few more and I have been putting up microphones since more than 30 years. Good value for the money.