Studio Recording Equipment
Low Price Guarantee - Click for Details
Secure Payment with Credit Card, Paypal, or Check
Same Day Shipping by Ground or Air
Phone: 503.640.7410
Mon-Sat, 8am-6pm PST
Home  |  Site Map  |  Contact Us     
  Home » Hardware » EQ » SOMA My Account  |  View Cart  |  Checkout   
   Audio Interfaces
   Mic Preamps
   Mic Accessories
   Effects Processors
   Electronic Percussion
   Acoustic Treatment
   CD Duplicators
   Power Centers
   Other Hardware
   Audio Recording
   CD/DVD Burning
   Limited Time Offers
   Used/Demo Items
   Studio Bundles
   Gift Certificates

Sebatron Beesneez 3 Zigma Microphones Promotion

KNIF Audio SOMA Mastering EQ

Model: SOMA
Manufacturer: KNIF Audio
KNIF Audio

Retail Price: $8,800.00
Our Price: $8,395.00
Available Options:

Read Reviews Write Review

Order from Pro Audio Toys and have U.S. Support, FREE SHIPPING and NO CUSTOMS DUTIES (we pay them)!

Knif's Soma is a clear departure from the old "passive EQ's are for general shaping only" paradigm. It is the only commercially available passive EQ with real Q adjustment, which makes it more usable and accurate than other products which use only a resistor based Q adjustment which affects boost/cut amount and does not offer a wide range.

It is not surprising that this type of ”real Q adjustment” passive EQs have not existed before the Knif Soma. When passive circuits reigned the EQ world there was no feasible technology available for the rather complex requirements. And when engineers started to require more control, active circuits were already there and thus passive designs were abandoned until it was realized that they offer superb sonic results. It was taken for granted that they have their limitations and were used accordingly, until now.

Well implemented real Q adjustment in passive EQs requires logic circuits and a lot of subminiature relays (around 140 pieces in Soma). Signal path in Soma is short, because frequency and Q adjustment (switching different capacitors and inductances) is executed locally and signal is taken to the front panel for gain control only.

Because reliability and long time ease of repair is important, there are no programmable IC's or microcontrollers. Only basic CMOS logic (in IC sockets) is used. Relays are rated for 100 million operations and thus it is likely that not a single one will ever break. Replacing logic circuits does not require soldering (if they actually break some day).

MS-matrix in Soma is passive, transformer based, and does not add one single component in the signal path and thus does not degrade sonic performance. Input and output transformers have multiple windings which are switched locally, with relays, to perform sum and difference operations.

Filter section is very simple. It should be mentioned that there is the possibility to switch S-channel high pass for 6dB/oct for ”elliptical” bass equalizing.

Filter caps are mostly polypropylene. Only in the lowest range it was necessary to use some polyester ones. Coils (enclosed in mu-metal) are hand wound by J. Knif and have maximum amount of taps to make the Q-adjustment possible. Make up gain amplifier is a simple two-stage affair with moderate amount of DC-coupled feedback, with tubes of course. Individual discrete regulators for anode supplies, mu-shielded signal transformers, all teflon/copper/silver wiring, no connectors on signal path, only solder joints, the list would go on and on. Read the paper if interested in more tech babble and info.

Objective performance is flawless, Soma is a mastering quality product in every respect. As an icing on the cake all knobs are from Elma's ”soft touch” collet knob range, offering substantially warmer feel and better grip than normal hard plastic knobs.

Note that front panel markings for gain are for every other position, switches are 23-position Elma rotary switches . Frequency (16 positions per range) and Q-value selection is done with binary logic switches, also from Elma.
There are no potentiometers. This is a product for mastering and made to last.

You can read a "paper" about quality factors in Soma and other Knif gear



Sound on Sound has published Soma review.
Tubes used2*6H30Pi and 2*ECC83
HP and LP2nd order
Bell curve Q-values0.5 0.7 1.0 and 1.4 nominal
Max output level+25dBu
Minimum input impedance at most extreme settings8 kOhm
Output trim in 0,25dB steps

For the complete list of ProAudioToys ECoupons, enter your name and email address below.


Blue SADIE Headphones with Built-in Amp
Blue SADIE Headphones with Built-in Amp
  Contact Us
  Price Guarantee
  About Us
  Link Exchanges
  Manufacturer Links
  International Orders
  Privacy Notice
Online Payment System

McAfee Secure sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams

     Advanced Search
Home  |  Site Map  |  Contact Us   
My Account  |  View Cart  |  Checkout