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New MJE-LR44 Long Ribbon Mic
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MJE-K47 Mod (for your SP1) - Hear it vs U 87ai $499.00 $399.00

Classic Sound. Listen for yourself.

Key Features:

  • Cardioid Pattern
  • Angled, single layer headbasket for more open, less smeared sound
  • Re-voiced, very low noise (10 dBa post mod) FET / transformerless circuit
  • MJE-K47 capsule for classic, mid-focused "Neumann-esque" sound with sibilance-free top end
Michael Joly Engineering will convert your stock MCA SP1 (a small diaphragm mic, look closely) to classic large diaphragm sound with the MJE-K47 capsule mod suite.

Michael Joly Engineering Modified MCA SP1 with MJE-K47 Capsule

Hear how the mod'd MCA SP1 sounds with a more-open single layer headbasket, new MJE-K47 large diaphragm capsule and Premium Electronics upgrade.

SOUND FILE: Male Vocal, U 87ai
SOUND FILE: Male Vocal, MJE Mod'd MCA SP1

SOUND FILE: Ac Gtr Fingerstyle, U 87ai
SOUND FILE: Ac Gtr Fingerstyle, MJE Mod'd MCA SP1

SOUND FILE: Ac Gtr Strummed, U 87ai
SOUND FILE: Ac Gtr Strummed, MJE Mod'd MCA SP1

This is Michael Joly writing, the founder of OktavaMod. Read on and find out if modification to your MCA SP1 is right for you. Then either place an order or click "contact me" and send me your questions.

Single Layer Headbasket Mod -

Like all OktavaMod upgrades, the MJE-K47 mod suite for the MCA SP1 starts with my signature single layer headbasket conversion. This mod increases headbasket open area to reduce internal reflections and coloration. You’ll hear clearer, less “boxy” and more detailed sound with more accurate transient response – hallmarks of the classic AKG C12 – itself a single layer headbasket design.

MJE-K47 Capsule Upgrade -

Classic sound – plus, is within reach. My MJE-K47 capsule was designed to track an actual Neumann K47 capsule through the important midrange then provide an extra touch of “air” at the very top end. You’ll hear the classic mid-focused vocal punch of the K47 design with just a bit of modern sheen on top. When this frequency response extension is translated to the time domain it means faster and more accurate transient response as well. And faster, more accurate transient response means greater detail and resolution – without resorting to a high frequency EQ boost. And switching to the more sensitive MJE-K47 large diaphragm capsule will improve your mic's S/N ratio as well.

Michael Joly Engineering Modified MCA SP1 with MJE-K47 Capsule (red) vs. U 87ai (black)

Note extended high frequency "air" provided by the 3 micron diaphragm MJE-K47 capsule

Premium Electronics Modification -

The circuit used in the MCA SP1 is a close approximation of a classic Schoeps transformerless design. But to save on production costs in the stock mic, inexpensive poor-sounding ceramic and under-sized capacitors are used in critical signal path locations. The MJE-K47 Mod Suite attacks these compromises by substituting components and topology pioneered in OktavaMod's field proven Premium Electronics modification. These component upgrades improve bass response while reducing graininess and mid-to-high frequency distortion.

Easy to Order -

Click "Add to Cart" to purchase a complete modification suite for your MCA SP1.

You'll get an immediate confirmation email of your order. Questions? Just click "Contact Me" - best, Michael

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