Heritage Audio Symph EQ
Baxandall equalizer’s topology, introduced to the public by Peter Baxandall in 1952, was a very ingenious way of obtaining high and low shelves with boost and cut option without using expensive rotary switches. This affordable circuit was soon adopted by hi-fi and console manufacturers for its simplicity, where parametric options aren’t needed.
Heritage Audio has successfully replaced the Baxandall topology with a functional equivalent — a much more musical one, implemented as a one rack space, master bus/ mastering type unit. The Stereo Asymptotic Equalizer, affectionately known as Symph EQ, takes its name from the shape obtained by its shelf curves; where the boost or cut amplitude grows up until the asymptotic value is reached, keeping the ultra highs and sub lows always controlled. Its sound can only be described as tight, sweet, and natural, and its use of parallel equalizing to obtain the desired response curves makes it to have exceptional low phase deviation and artifacts.
Shelving with surgical, but musical precision
A smart circuit layout allows for a maximum boost/cut of 10.5 dB in 0.5 dB steps. The main rotary switch sets 1dB steps whilst the 0.5 button adds half a dB to the main reading. The CUT button turns the boost amount into cut. Six strategically selected frequency choices per band are available (8, 10, 12, 15, 20 and 24 Khz on the high shelf, and 470, 360, 220, 110, 60 and 20 Hz on the low shelf).
2-Pole High and Low Pass Filters
In order to keep the sub-low and ultra-high frequency content well under control, further high-pass and low-pass filters have been added on dual concentric rotary switches, at 12dB/octave. 5 frequency choices plus OFF are available on each one (10, 12, 18, 22 and 30 Khz on the low-pass, and 160, 82, 47, 20 and 15 Hz on the high-pass).
This is where the magic lives
The Symph EQ would have been an awesome sculpting tool just as it has been described above, but it turns into a monster piece with the following 3 additions:
It features the same exclusive Carnhill input transformers made in Oxford found in the Successor. Its outputs are driven by 73-type Class-A output amplifiers, built with the same Carnhill St´Ives output transformers as the rest of the family. Most importantly and, here is where the Symph EQ really shines, it has built in Mid Side (M/S) capabilities.
M/S equalizing cannot be rivaled
Nothing comes close to M/S equalizing a mix. It allows the user to process the center and the sides independently. The benefits of such processing are hard to believe. You can brighten your mix without making your vocals sound harsh, or even tighten the stereo-image’s bass content without making your bass or kick sound weak! These are just a few examples of the Symph EQ M/S power!
The response of the Side high pass filter has been made elliptical as in the vintage disk cutters for precise frequency response.
- Custom Carnhill Oxford input transformers, and custom Carnhill St Ives output transformers, both exclusively made for Heritage Audio.
- A high-end, 73-style Class-A output stage.
- All controls use high-quality rotary switches for 0.5dB precision equalizing.
- Mid-side processing allows for precise center bass management and high boosting hard panned sources without affecting center ones such as vocals, snare, etc. Side high-pass filter turns into elliptical type when in M/S, as implemented in vintage disk cutters.
- Stereo and M/S inputs and outputs, all balanced and ground free (unbalanced compatible) on gold plated XLRs.ON, M/S or stereo mode and individual hard BYPASS per channel.
- Fully manufactured in the EU.
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!
We’ve partnered with Klarna to give you a better shopping experience. You can now shop at Arda Suppliers and pay 14, 21 or 30 days after you receive your gear. You can also pay in instalments with no interests. Also with Klarna, you can finance your purchase up to 36 months. Klarna payments at Arda Suppliers is only available for a specific set of countries, with different payment options for each. Current countries where you can pay with Klarna are Germany, Austria, Belgium, Netherlands, Spain, Italy and Finland.
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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.
Regarding plugin sales in our online store, those are processed automatically so you'll receive your code immediately after your purchase!
Everything we sell is covered by the manufacture's warranty, which is a least 1 year. Special conditions may apply.
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.