SPL Gemini Mastering MS Processor, All Black

SPL Gemini Mastering MS Processor, All Black



We will ship to you as soon as we receive stock

SPL Gemini Mastering MS Processor, All Black

Free delivery on this product

Retail Finance
Click and Collect

Gemini from SPL is an M/S mastering processor designed specifically for mid signals such as vocals, snare and bass, as well as side signals such as guitar, cymbals and more spatial signals.

The mixing ratio for both stereo channels can be adjusted in connection with the stereo width controls, whilst the Gemini’s built-in elliptical filter cuts low-frequency ratios of the sideband as required.

A popular configuration is to place mid/side encoder in position 3, EQ in position 4 and the decoder stage in position 5. This enables separate processing of mid and side signals before combining the two into a left/right stereo signal.

For additional dynamic processing, a compressor could also be added to position 5, moving the decoder stage to position 6.

M/S coding is a perfect route not only to gaining access to individual elements in a mix within the sum signal, but also as a means to work on the stereo panorama.

Gemini boasts a range of powerful features adept at helping to achieve the perfect master. Balance control positions mid signals within the panorama, whilst trim controls adjust levels between mid and side signals.

SPL’s Gemini and Hermes processors can operate in their complete range of functions as stand-alone devices, however joining the two together enables even more possibilities.

Gemini’s encoder and decoder stages can be paired with inserts of Hermes to exactly specify the position of mid/side encoders and decoders within the processing chain.

Key Features:

  • Mid/side specific mastering processor
  • Balance control for mid signal positioning
  • Trim control for mid/side signal adjustment
  • Adjustable stereo width
  • Elliptical filter for lower frequency ratio cuts
  • Link with the SPL Hermes for even more routing and mastering options

SPL Gemini Mastering M/S Processor Specifications:

  • Max Input Level: +32.5 dBu
  • Input Impedance: 20 kOhms (bal.)
  • Max Output Level: +32.5 dBu
  • Output Impedance: ‹ 100 Ohms (bal.)
  • Noise: -98.2 dBu (A-weighted)
  • THD: › -110 dB @ +20dBu
  • Common Mode Rejection: -79 dB @ 0 dBu
  • Transmission Bandwidth: 10 Hz-150 kHz
  • Dimensions: 482 x 44 x 300mm, 5kg
More Information
SKU 332306
Shipping Weight (kg) 0.000000
Warranty 2 Years


We have a wide range of Delivery Options available, depending on the value of your parcel and budget. Select from our 2-3 Day Saver Service or our Next Working Day options at the Checkout.
This will include a text or email on the day of delivery giving you an exact hour window of when your gear will be with you, and the drivers name - just so you know when to turn the volume down!

  • Free Delivery Available on Selected Products
  • Weekend UK Mainland Delivery (Saturday-Sunday): £19.99
  • Small Items (Under 750g) Small items will be delivered by Royal Mail starting from 99p
  • Heavy Items (Over 30kg): Pallet Service Doorstep Delivery £65

For heavy items, courier details, out of stock products, out of area postcodes or international deliveries see our full Delivery info here.


Rather not wait in for the delivery? Don’t worry, we’ve got you…In Stock items can be ordered and paid for in-advance Online via our Click & Collect service. As long as if it's in stock at your chosen branch, you can collect the item within the hour.

Click here for more about our local Click & Collect Service.


If you and your item aren’t getting along, you have 14 days from when you receive the goods to contact our PMT experts either by phone or email to return your item.

*Please note, we cannot accept returns of:

  • Special/Custom Orders - Any order that is custom or has been personalised.
  • Products with Hygiene Seals - Microphones, any in-ear earphones, monitors, orchestral instruments with mouthpieces and any other items that touch your mouth, nose or inner ear if you have broken the hygienic seal on the packaging.
  • Software & Media - Any software or media that has been opened or registered via physical or digital means.

Click here for more information on Returns at PMT.

Online Orders

If you and your new item aren’t getting along, you have 14 days from when you receive the goods to contact our PMT Experts either by phone or email to return your item or organise an exchange for something more suitable.

Store Orders

If you've changed your mind about something you bought in-store, bring it back within 14 days of purchase and we'll be happy to exchange it for another product, a gift card or store credit.