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musical instrument details

API 560 10 BAND GRAPHIC 500 series EQ Better Output transformer installed.

Estimated price for orientation: 604 $

Category: API 560 Classic 500 Series 10ban
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Description
Condition: Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections. See all condition definitions- opens in a new window or tab ... Read moreabout the condition Brand: API
MPN: Does Not Apply


You are buying one API 560- 500 series module 10 bands of control to carve, cut your audio.   It has been well taken care of from a private pro studio.
It is in excellent slightly used condition.   This particular eq has been modified with a better output transformer made by Profile back in the days.

Profile 4804 output transformer which under my personal testing gave it more clarity and open sound then the remakes that came with the 560 originally (current reissue make).      Also, the sound can even more be enhanced for the true API vintage vibe by replacing the modern opamp with a vintage API opamp if you so choose.  This particular unit has a 2016 api 2520.   So it's a essentially a new opamp which did not originally came with it and that means you got more life in the opamp.   These opamps at times, do go dead after 20-30 years of use at times. 
The Profile 4804 was an exact duplicate of the older API 2503, there was a lawsuit dispute between API and Profile back in decades ago, hence why Profile stop making them.   These are rare and hard to find, I sold several years back quickly on Ebay for $250 each.  So I am not the only one who knows the improvement of these remakes.    And installed several in my reissue API modules for a better sound.   Here is your chance to grab one.

This type of transformer have very good HF-property and have a bandwidth up to mHz range, because the perfect phase response (aprox +/- 1 degree/10Hz to 100kHz) and it has a very good transient response.