The lineage of the 5500 circuit can be traced back to the original 550 equaliser designed by Saul Walker, the founder of Automated Processes Inc. The 550 was designed as a console equaliser which, due to the architecture of the recording console, uses an unbalanced input. Because the ergonomics of a console dictate that the controls take up little space, sometimes the number of included functions can be limited. The 5500 is specifically designed to address these limitations. It has a balanced input, a true straight-wire bypass, an integrated power supply with noiseless muting, and a range control that expands it versatility to mastering applications.
Like all API products, the 5500 contains no integrated circuits in its signal path. The gain comes from two hand-built 2520 operational amplifiers in each channel. The balanced input is handled by a 2510 discrete operational amplifier, which is similar to the 2520, but without the high current output stage. Besides being a key component of the API sound, the 2520 coupled with the API 2503 output transformer is capable of delivering +30dBm before clipping. With this much headroom, it is unlikely that the 5500 can be driven to distortion unless perhaps another API unit is driving the input!
A new feature in the 5500 is the range control. The range of the amplitude controls can be reduced to 1/2 or 1/4 of their stated scale, providing a means of adjusting the tonal balance with finer resolution in an even gentler manner. This should be especially useful for complex program material as contained in stems or submixes, and is ideally suited for mastering purposes.
Also new on the 5500 is a true hard-wire bypass. In this mode the output connector is wired directly to the input. Shortly after the power is first applied, or immediately after it is lost, a special circuit enables bypass mode so signal is never lost and power thumps are never heard.
The input XLR is connected to an active balanced circuit. The output XLR is driven from a transformer coupled output and can drive any load from 600 ohms or greater to full output capability. The polarity is such that there is no change from input to output, so it is suitable in studios using either pin 2 or pin 3 as the "hot" connection. In addition, there is a 1/4 inch input connector that interrupts any signal that is present on the input XLR. It is balanced and can be driven from either balanced or unbalanced sources. A positive signal on the tip will deliver a positive signal on pin 2 of the output XLR. Using the 1/4 inch input does not bypass any internal circuitry and does not change gain or operating level.
The 5500 carries API's standard 5 year warranty.
All prices on our website include 23% Portuguese VAT and are also displayed VAT free. If you’re buying from outside of Portugal and have a VAT registered business within the EU, you can buy directly on our store without VAT. Just add the product to your cart and go to the checkout page and there will be an option for you to enter and validate your VAT ID. If it's accepted through our system your order will be completed and fulfilled without VAT. Please note, if you use an express checkout or buy it now button the option to buy without VAT isn't available, you need to add the product to cart first and use the standard checkout procedure.
We can ship worldwide but our online store is configured to only handle orders to Europe (Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Liechtenstein, Luxembourg, Malta, Netherlands, Norway, Poland, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, United Kingdom). 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.
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.
Bank transfer is preferred, but we take all major credit cards, PayPal, or cash if you’re picking up the gear at our shop. We don’t accept debit cards or checks at the moment.
If you’re looking for financing for your purchase get in touch as we might be able to help you with that.
According to EU law, we accept returns for all the products purchased through our online store during the next 14 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.
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 issue a refund or give you credit for another 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 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.