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Gyraf G14S Stereo Passive EQ

Regular price €5.150,00

€4.186,99 (ex VAT)
Usually ships to you within 1-2 weeks
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The G14-S is a passive stereo equalizer, equipped with two different topologies for makeup gain and interfacing. The filter itself consist of five bands – each with 11 switchable frequencies, continuous variable “Q”, and individual boost/bypass/cut selection. The unit has an overall output level “TRIM”, and a hard relay bypass serving as reference for your work.

The stereo channels are linked – controlled with one set of knobs, so you won’t ever have to match settings of two channels. The “Q”s, filter sharpness, are rather low when boosting, but higher at cut – approaching notch behavior at extreme cut settings. This is both a side-effect of the applied passive technology – as well as quite desirable in situations where sound integrity is the paramount factor.

Frequencies for the five bands have been selected with special attention to controlability of the midrange area, with approximately half a frequency-range overlap to the adjacent bands.

This equalizer technology is a very extended version of the classic passive inductor/capacitor type filter. Although the classic versions are very useful tools in many situations, they often feel somewhat limited due to their simple construction and coverage. Our engineers wanted – as engineers tend to do – much more of everything. So we came up with the parallel-passive design, the G14.

G14-S is based on this truly passive design – switching a set of inductors and capacitors in and out of circuit. This passive filter set is then matched with input/output interfacing for trouble-free interfacing to the outer world, and a gain stage to make up for the approximate 20dB passive loss in the filters.

For this, we give you a selection of two different technologies – at a flick of the bypass switch: When set to “IN”, you have the traditional and much-loved selection of tube makeup gain based on 6H23n (E88CC/6922) tubes combined with transformer-balanced input and output interfacing.

If this gets to be too much of a good thing, you switch the bypass to “S” – and we replace everything but the filter and controls with entirely different technology: The inputs are now integrated balanced differential receivers, amplification is handled by a high-grade opamp, and output is driven by state-of-the-art active servo balancing circuits. Two entirely different personalities in one box.

An important feature – for us – is that the original signal path of the classic G14 is fully preserved in the G14-S: Only parts relating to the solid-state path has been added, in “tube mode”, the G14S


  • Input impedance – around 5K Ohms, transformer balanced or 24K Ohms Servo/ differential receiver balanced input
  • Output impedance – ~1K Ohms, transformer balanced or ~100 Ohms, active servo balanced
  • Make-up gain Amplification by 6n23p/E88CC tube stage or contemporary opamp circuit
  • Max boost/cut – ~10-12dB, depending on “Q” setting
  • Gain trim ~+3 – -5dB – unity gain somewhere between 12:00 and 14:00, depending on tube matching point
  • Each of the five bands are individually hard-bypassable (on the “MODE” control)
  • Channel tracking better than ~1dB

Frequency markings:

  • Low: 35-48-60-70-80-100-120-160-190-220-270Hz
  • Low mid: 180-230-280-330-400-430-490-550-590-650-750Hz
  • Mid: 500-570-700-800-900-1K-1K1-1K3-1K5-1K8-2K1 Hz
  • High mid: 950-1K2-1K4-1K7-2K-2K5-3K-3K5-4K2-5K-6K3 Hz
  • High: 4K5-5K6-6K5-7K8-9K1-12K-14K-16K-18K-20K-22KHz

G14-S is as standard available as a 230V mains unit – other mains voltages will be made on request (at no extra cost).

We can ship worldwide but our online store is configured to only handle orders to EU (Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden) and Schengen countries (Iceland, Liechtenstein, Norway, Switzerland). If you want us to ship to a country outside this list just get and touch with us so we can quote you and let you know how much it would be to fulfil such order.

For all orders over €400 will automatically receive free shipping during checkout, if it's for one of mainland EU countries (Austria, Belgium, Bulgaria, Czech Republic, Germany, Denmark, Estonia, Spain, Finland, France, Greece, Croatia, Hungary, Ireland, Italy, Lithuania, Luxembourg, Latvia, Malta, Netherlands, Poland, Portugal, Romania, Sweden, Slovenia, Slovakia). No need to add a promo code or voucher, it's all done automatically!

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We accept returns for all the products purchased through our online store during the next 30 days after receiving the goods, provided that the packaging is in it’s original condition. If this is not the case, we reserve the right to refuse the return or charge a re-stocking fee (ranging from 5% to 15%, depending of our evaluation of the returned goods).
All returns need to be pre-approved by us and must be complete including accessories and documentation with original packaging.
You are responsible for return shipping costs including shipping insurance which is recommended to protect your items, as you are liable for items damaged during return shipment. Additionally, if you received free shipping on the order when we fulfilled it, we will be deducting the value of this shipping cost from your refund/discount.
We do not accept returns of the following goods: (1) Software and computers; (2) All custom or special order items; (3) Magnetic tape or other recording medium; (4) Personal use items, such as headphones or windscreens; (5) Studio furniture, racks and chairs.
After inspection of the returned goods, and providing that they meet the conditions stated above, we will give you credit for another purchase or issue a refund (only available on selected brands). Please contact us before purchasing if you want to know if the goods are eligible for refund or store credit.

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We have access to all the products of the brands we represent, however not all of them are listed. Please get in touch and let us know what you’re looking for, we can pretty much guarantee the best price in Europe.

We use UPS so you can expect 1 - 3 business days to get it after we ship (1-2 days if we’re shipping to continental Portugal). If the item you bought is in stock, we usually ship the same day (for orders placed until 11AM) or the next day at the latest. If we’re out of stock, we can usually get the products in 2-5 working days. Please get in touch if you have a specific deadline you have to meet before ordering. In some cases we can ship a demo unit to get you to work if the manufacturer has a longer lead time.

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Yes, we do. Please contact us to know if the software you’re looking for has an Education licence available.

We don’t through this website, but please check our Reverb store. There you can find B-Stock and Ex-Demo gear, as well as other stuff (used and new) from brands we don’t usually represent.

At Arda Suppliers we try to work with only the best brands in the business, because we know how important is reliability in a professional environment. That being said, sometimes shit happens. If you run into some issue with anything you bought from us, please get in touch and we’ll try our best to take care of it ASAP. We might even be able to provide you with some sort of replacement gear in order to minimize downtime.