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MP573 Microphone preamplifier for the '500' Lunchbox - Kit
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MP573 Microphone preamplifier for the '500' Lunchbox - Kit
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MP573 Microphone preamplifier for the '500' Lunchbox - Kit
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MP573 Microphone preamplifier for the '500' Lunchbox - Kit

Price: 339,00€ (406,80€ VAT inc.)
361,33 USD 287,40 GBP
(exchange fees not included)

The MP573 is a two stages, single ended class A preamp, based on the design that was originally used in the Neve 1290/1073 modules, that has been adapted to the '500' format of API.

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  Product ID MP573
  •   Description
  •   Specs
  •   Docs
  •   Media
  •   Reviews

MP573


The MP573 is a two stages, single ended class A preamp, based on the design that was originally used in the Neve 1290/1073 modules, that has been adapted to the '500' format of API.

Just install it in your API* compatible LunchboxTM rack and start recording.

The sound of the MP573, like its model is full, silky, detailed and musical, slightly larger than life, very complimentary to a digital recording environment.

The MP573 is great on vocals, acoustic instruments and generally all close miked sources that need to be pushed forward in the mix.

Highlights

  • Single ended class A design
  • Carnhill/St. Ives transformers on input and output
  • 0 to 70 dB of gain
  • Switchable 300 & 1200 Ohms and line level input impedance
  • Switchable first stage
  • The output stage is biased in a rich Class A with 70mA of iddle current
  • Fet DI input, relay switched, the signal passes through the input transformer
  • Signal/Clip LED monitors clipping in both stages
  • 24V supply built from the +/-16V with a linear regulator
  • Controlled inrush current for lunchboxes with sensitive power supply
  • Golden contacts on relays and switches
  • High quality Grayhill gain switch
  • High precision aluminium knobs
  • Tantalum capacitors in the audio path (as in original)
  • High grade 105°C low ESR electrolytic capacitors
  • WIMA film capacitors
  • High grade double sided PCB with plated holes
  • Easy build, dense but straightforward
  • Available assembled or as a full kit (everything included)

Controls

1 Output level: Potentiometer that sets the signal level to the output stage

2 Signal/Clip LED: Flashes green when a signal is present and turns red 3 dB before clipping

3 Gain switch: In combination with the level potentiometer the overall gain can be set between 0 and +70dB. The 10 and 20 positions entirely bypass the input stage.

4 Input impedance: Center is the standard 1200 Ohms input impedance. Left sets a 300 Ohms low impedance, useful for ribbon mics that also adds 6 dB of gain. Right sets a 10 kOhm impedance input pad for line levels.

5 Polarity Sets the polarity (phase) of the output signal

6 Sends phantom power to the microphone

7 High impedance input (> 1 megohm) for instruments. The instrument signal goes through both transformers.

What's in the kit?

Absolutely everything!

  • Passive components (resistors, capacitors),
  • 2 Carnhill transformers
  • Active components (diodes, transistors, LED, ...),
  • Front panel elements (switches, potentiometers, knobs),
  • Connectors, relay,
  • PCB's,
  • Front panel and side panel,
  • All hardware

You bring the solder (use good quality solder, 1mm diameter max) and the Lunchbox.

Difficulty level

The MP573 kit is an easy build in spite of a rather large number of components.
The only setup is adjusting the bias current in the output stage. It requires a standard DC voltmeter.

Product Options

XT500 Extender: The XT500 option is a cable extension that allows you to test and setup the module outside the lunchbox while connected.

501 Case: The 501 case option is a standalone, single slot lunchbox with PSU.
The XT500 Extender is not needed with the 501.

Assembled Product: If you prefer not to DIY, choose an Assembled product. It comes fully assembled, ready to use.


lunchbox

Technical specifications

Measure Conditions Value
Iddle supply current No input signal

V+ : +92mA
V- : -92mA

Input impedance f=1kHz
300Ω, 1200Ω and 10kΩ
Maximum input level Line input unlimited
Maximum output level before clip f=1kHz +27dBu
Minimum gain   0dB
Maximum gain   +70dB (+76dB in 300 Ohms)
EIN Zin=0Ω
Bandwidth=0-30kHz
-126.5dBu
Frequency response Gain=+40dB
Zin=150Ω
Deviation < 1dB
10Hz-50kHz
THD f=1kHz
Gain=+40dB
< 0.008%
DI input impedance   > 1MΩ
DI gain range   -22dB to +48dB
DI max input level   +15dBu

 

lunchbox

Documents


  Go to Products technical documentation

  User manual

Media

Real vintage analog sound?

 

Sound Skulptor MP573, MP512, MP566, MP599 Preamp shootout for bass guitar

 

MUSIXON indepth review of the MP573 January 2021

 

Building the Soundskulptor MP573 preamplifier

 

Another build the Soundskulptor MP573 preamplifier

 

Power up and test of Sound Skulptor MP573 DIY Preamp

 

Review del previo de micro Sound Skulptor MP573 (Espagnol)

 

Sound On Sound review of the first MP573 released in 2012

 

Sound On Sound "News" about MP573

 

Sound Skulptor MP573 MikrofonvorstufenBausatz für die API "Lunchbox" Tools4music-2011-12

 
9 Product Reviews - Average rating 5 / 5    Show All

Click to review this product

Parfait pour les voix, guitare acoustique, overhead

Clergeot Michael - 30/06/2021

Je l'utilise sur des voix, guitare acoustique, overhead batterie (j'ai enfin un beau et vrai son de cymbale !).
Il est assez doux et enrichi délicatement le son.


Another great piece of gear

Udo Terlisten - 27/02/2021

I must say this is a very good preamp when it comes to that „bigger than life“-sounds on vocals.It was very easy to build,same as all the other kits I built from Soundskulptor so far.Very well prepared,no missing parts,superfast shipping to germany.Another great addition to my arsenal,congrats Jean-Pierre!

Best regards and keep it going,

Udo.


ready to go preamp!

Pierre B - 23/10/2020

Preamp terriblement efficace et conforme à la description: si vous avez quelque chose à mettre en valeur dans le mix c'est bien ce preamp qu'il faut choisir!

Le kit est complet, très bien documenté. Attention cependant à bien lire la doc et à ne pas aller trop vite sur le montage même si vous avez l'habitude du DIY.

Et si vous avez un problème, le SAV répond très rapidement. J'ai eut un problème d'inversion de composant et avec la DI, et Jean-Pierre du support a su m'indiquer rapidement ce que je devais modifier.

J'ai pu faire une comparaison A/B avec un 710 universal audio sur une basse électrique, Synthé et voix. Résultat le MP573 remporte le match. Un très beau medium, du bas à revendre mais équilibré (j'ai pensé avoir oublié le low cut sur le 710 au début...), les aigus sont là.

L'avantage du kit: on sait ce qu'il y a dedans et c'est de la qualité! On peut éventuellement corriger soit meme une panne dans le temps. Qualité audio largement supérieur à ce que l'on pe...


Fabulous "1073"-inspired 500 Series preamp

JG Teheux - 12/02/2020

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...


Great Sound

Philipp Wilfinger - 23/12/2019

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


Best DIY 1073 Clone out there

Henry - 19/12/2019

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!


Click to review this product

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