Midas Compressor Limiter 522 V2

I write this after running the elysia mpressor 500 through tracking, mixing and a few creative sound-design sessions, and what stood out to me was how many sonic personalities are packed into one small module. My primary use case was detailed drum shaping and glue on bus duties in a 500-series lunchbox, and I found the unit equally at home on individual sources and in more experimental roles where the quirky controls reward exploration.

First Impressions

The first time I slid the mpressor 500 into my lunchbox I noticed its solid, well-machined faceplate and the stepped controls that make recall feel trivial - it looks and feels like German engineering, precise and deliberate. Powering it up, the LED-style analog gain-reduction meter felt immediate and useful for dialling compression quickly, and the stepped knobs gave me confidence I could return to settings without hunting. Out of the box it seemed aimed at professionals who want both transparency and extreme coloration options in the same module.

Design & Features

The mpressor 500 is essentially the mpressor concept shrunk into an API 500 module - discrete Class-A topology, stepped controls, and an unusually feature-rich sidechain set of options. I appreciated the Auto-Fast mode that helps the compressor pick sensible attack/release settings, the Anti-Log release option for creative pumping, negative ratios that open up rhythmic compression effects, and the Gain Reduction Limiter which caps control voltage rather than audio output so you get predictable behavior even with wild inputs. The THD Boost switch is an especially welcome addition for anyone wanting instant analog grit - in use it thickened transients and added harmonic texture without sounding muddy when used conservatively.

Build Quality & Construction

The physical build is reassuring - a robust PCB and a heavy-duty connector area that feels like it will survive a lot of hot-swapping in lunchboxes. Knobs are stepped and positive, so I never worried about accidentally nudging settings during a session, and the analog-style LED meter is bright and informative without being overbearing. The unit is small but substantial, and its finish matches other premium 500-series modules so it integrates neatly into my rack.

Real-World Experience

I used the mpressor 500 on kick, snare, drum bus, bass and a pair of acoustic instruments; what impressed me most was its range - from near-transparent leveling to extreme, characterful compression. On a snare it gave me snap and body when pushed, and on a drum bus the Gain Reduction Limiter prevented the bus from collapsing while still offering aggressive control. The THD Boost was my go-to when I wanted a thicker bass or a grittier drum vibe - it adds harmonics in a musical way but be mindful that the boost can raise distortion noticeably at higher levels. Auto-Fast saved time when I needed a quick starting point, and the stepped controls made A/Bing and recall straightforward during busy mix sessions.

The Trade-Offs

The mpressor 500 is not a one-knob transparent compressor for people who want something invisible and entirely predictable - its feature set leans toward creative and sometimes aggressive dynamics shaping, so there is a learning curve. In THD Boost mode you do get a measurable increase in harmonic content and THD - that character is wonderful for some uses but excessive for others, so you’ll need to decide case-by-case when to engage it. Also, because it’s a single-slot 500 module, stereo work requires two modules or an elysia qube solution if you want matched stereo operation.

Final Verdict

After a solid stint of tracking and mixing with it, I’d recommend the mpressor 500 to engineers and producers who want a highly flexible, sonically rich compressor in a compact format - especially those who like to switch between clean leveling and colored, aggressive dynamics. It’s well-built, sonically versatile, and packed with thoughtful features like Gain Reduction Limiting, Auto-Fast, Anti-Log and THD Boost that turn it from a mere utility into a creative tool. If you need a transparent bus compressor only, you might find it a little feature-heavy for that single role, but for anyone who wants a compact compressor that can both disappear and dramatically transform sound, it’s a compelling choice.

I've been slotting the Fredenstein Artistic Mic Pre Plus into my 500-series rack over the last few months for vocal, acoustic, and DI work, and it quickly became my go-to when I wanted a bit of vintage heft without committing to a full tube rig. I use it in a modest project studio context where I need flexibility - lots of clean gain, a usable DI, and the option to add character with the Color control.

First Impressions

Pulling the Artistic Mic Pre Plus out of the box I noticed the weight and the tidy, uncluttered faceplate - it feels like a proper 500-series module rather than a toy. The Color knob is the immediate talking point - it looks simple, but it ranges from transparent to quite gritty, and the LED for the Color circuit gives good visual feedback. The meter and signal LEDs are sensible and accurate in use, which is something I appreciated during tracking sessions where quick visual confirmation matters.

Design & Features

The unit is a 500-series module built around Fredenstein's discrete OPA2 operational amplifier and a US-made steel-core output transformer - those two elements define most of its character. You get 20 dB to 65 dB of gain, a -20 dB pad, switchable phantom 48V, a front-panel DI with about 2 MOhm impedance, and a selectable input impedance option (around 1500 ohm or 300 ohm). The Color circuit is deliberately level-dependent and emulates a tube-like harmonic response that can be dialed from off to very present, and the OPA2 is in a socket so it can be exchanged if you want to experiment with different discrete op-amp modules.

Build Quality & Protection

The Artistic Mic Pre Plus is built like a serious 500-series module - substantial PCB, solid connectors, and a robust faceplate. The transformer and internal parts are thoughtfully mounted, and the overall impression is of a product designed for repeated rack swapping and real studio use. I haven't had any reliability issues during my time with it, and the controls stay put - nothing feels plasticky or fragile.

Sound & Tone

Sonically the Artistic Mic Pre Plus walks a tightrope between clean and colored. With Color fully off it is transparent, fairly neutral, and generous on gain - it handled low-output ribbons, dynamics, and passive condensers without strain, and the noise floor stayed impressively low. When I dialed in Color the unit added warm secondaries and a pleasing harmonic lift, more tube-like than overtly distorted - but turned up, it can lean into saturation that is fantastic on aggressive spoken-word, rock vocals, or crunchy DI guitar. The level-dependent behavior is real - the Color responds to incoming level the way a soft tube stage does, which I found musical and usable rather than gimmicky.

Playability & Usability

I found the control set refreshingly simple - gain, Color, pad, polarity, and impedance choices are all logical and fast to work with in a session. The front-panel DI avoids unnecessary cable routing and the automatic mic cut when you insert a jack in the DI is handy. Metering is adequate for gain staging in a busy session, and the Color LED helps judge when the saturation starts to influence the signal.

Real-World Experience

I used the preamp on a variety of sources - close-miked male and female vocals, a ribbon on an acoustic, DI bass and electric guitar, and even as a clean front end for a small condenser on a drum overhead. On vocals I liked the added presence and harmonic body when I used Color subtly - it helped a slightly thin vocal sit in a mix without heavy EQ. With DI bass the transformer added a pleasing roundness that translated well to playback; with acoustic guitar the clarity with Color off was excellent, and flipping Color in added a sense of bloom and harmonic richness that you could control with playing dynamics.

The Trade-Offs

There are a few compromises to be aware of - the Color circuit is fantastic but can be aggressive if you push it, so it requires taste and attention to level. There is no on-board EQ or compression, so for some tasks you'll still need additional outboard processing. Finally, while the transformer gives a desirable sonic footprint, it does impart character - if you want a truly transparent, colorless front end for mastering or ultra-clean tracking, you may prefer a different preamp.

Final Verdict

The Artistic Mic Pre Plus is a flexible 500-series pre that delivers useful, musical character plus plenty of gain and a credible DI, all in a compact module - I recommend it to project-studio engineers and producers who want transformer warmth and a controllable tube-style color option without the expense of large-format vintage gear. If you need a single, versatile pre that can be clean or characterful and works well across vocals, guitars, and DI sources, this is a strong candidate; if you want surgical transparency or integrated dynamics/EQ, you should factor in additional gear to your chain.

I spent several weeks running vocals, guitars, and drum overheads through the IGS Audio NE573 500-series module to see whether it really delivers that “golden-era” punch it promises. Coming from a workflow that mixes in-the-box convenience with a few favorite analog modules, I wanted to know if the NE573 could be the one module that adds vintage transformer color without derailing modern tracking and recall needs.

First Impressions

The NE573 feels familiar right away - a simple, clear front panel with a large stepped gain knob and a few switches that get you to the sound quickly. My first impressions were of solid construction and a tactile response from the stepped controls that made dialing in gain effortless, and the presence of a front Hi-Z jack and phase switch meant I could move between guitar DI and mic sources without reaching for the patch bay. Powering and connectivity are straightforward and it sits cleanly in my 500-series rack without fuss.

Design & Features

IGS took a classic architecture and condensed it into a single 500 slot, and the NE573 ships with the expected modern conveniences - stepped gain, switchable input impedance (300 / 1200 ohm), phase flip, +48V phantom, a front TS/XLR combo for Hi-Z sources, and an output trimmer. The unit runs on 24 volts and uses IGS custom transformers on input and output along with Grayhill switches and a Motorola transistor on the output stage - the combination that imparts that vintage transformer coloration while keeping the module reliable for long sessions. The stepped gain goes up to the unit's maximum, and the front-panel signal/peak LED is a very useful visual for fast tracking sessions.

Build Quality & Protection

The module feels well-built for a 500-series insert - the front panel is rigid, the knobs are stepped and positive, and the switches have a reassuring, precise action. IGS uses components like Grayhill switches and custom transformers that give the NE573 a heavier, more premium feel than some budget 500 modules, and it sat securely in my rack with no microphonic issues during handling. There are no bells and whistles - no remote recall or digital control - but that simplicity keeps the mechanical reliability high.

Playability & Usability

I found the stepped gain and the output trim to be very practical for tracking and for quick A/B comparisons. Stepped controls make it easy to return to previous settings during later sessions, and the Hi-Z front jack doubled as a convenient DI input for guitars and synths. Switching input impedance between 300 and 1200 ohms noticeably changes how certain dynamics mics and ribbon mics behaved, and that gives me a quick tonal palette without swapping out gear. The only usability quirk is that the panel is compact, so small hands or dim stages require an extra glance to hit the right switch, but nothing that slows a real session down.

Real-World Experience

On vocals the NE573 adds weight and a musical midrange that sits nicely in a dense mix - it is not just boosty EQ, but a palpable transformer character that thickens the voice without obvious artifacts. For guitar DI and mic'd cabinets it added a sweet top-end sheen and a rounded low mid that made DI tracks gel easily with amp tracks. I also used it on drum overheads and room mics where the added transformer energy helped drum transients feel more “present” and punchy, especially when paired with a modest amount of compression later in the chain.

The Trade-Offs

The NE573 is intentionally colored - if you want pristine, glassy, transparent preamplification you will find something cleaner for less money. It also lacks onboard EQ or dynamics - it’s purely a preamp - so if you need tone-shaping built in that adds to setup complexity. Finally, the unit is a mono 500 module, so for a pair you will need two slots and ramped cost, which is worth factoring if you plan to mic stereo sources often.

Final Verdict

The IGS Audio NE573 is a focused, well-executed Neve-style transformer preamp in a 500-series form that I would recommend to producers and engineers who want classic transformer character without committing to a full console. It shines when you want to add punch, midrange body, and analog mojo to individual sources and it integrates cleanly into modern 500-series workflows. If you need transparent preamplification, look elsewhere - but if you crave that classic color and stepped, tactile control, the NE573 is an excellent single-slot option.