JBL 7126, Professional Series Compressor, Vintage Rack. JBL 5196 Professional Series, Matching Bridging Transformer. No movement in the meter is detected. Ratio knob is a bit loose. The last time the unit was tested it passed audio and compressed the signal. No further testing has been performed. It is not fully tested. No guarantee it will retest the same. For the physical condition of the item please take a look at all 12 photos, and what is included in the sale. The background material is not included. Most of the items we sell are used and have signs of cosmetic wear, including scratches and other wear. All items were cleaned but may need further cleaning. There is a limit of 12 photos per listing and not all and every detail can be photographed and shown. All items are in storage and further photos are not available. Functional condition is described in the first paragraph above. Unless indicated in the first paragraph the sale does not include any accessories, including power adapters, connection cables, talent, manual, instructions, product support, or any other instruments, items or services. A standard 3 prong power cord, for USA users, is included when applicable, unless it is excluded in the first paragraph. We do not sell items for buyers to demo to see if they like the item or not. We are not experts in all audio and musical instruments and cannot provide product support. Please refer to the manual, when available, for more info. Most units are tested with USA standard 110 to 120V. Other voltages if available are not tested unless as indicated in the first paragraph. Most audio equipment is tested by sending a line level signal from a CD player to the units input and connecting the units output to an amplifier, and then listening for normal expected sound output and response to controls. Inputs and outputs are only tested for analog, not digital, connections. Midi function is only tested on sound modules, and only for signal from or to the unit. If the Unit is found to function in normal operations, the statement The last time the Unit was Tested it Functioned Well. Will appear in the first paragraph, and if applicable with a statement of any defects discovered. We do not test the audio or other electronics with any other audio or multi-meter devices. Units that we have no experience with will be described to the extent of testing in the first paragraph. Please keep in mind most units are complicated and not all functions are tested. Also, most are older units and may need their pots and/or other controls internally sprayed or cleaned. Any major issues discovered in testing are described in the first paragraph. We do not repair or modify the items for sale and do not know the full history of use. The items are presented in the condition that we acquired them. We may have multiples of this model available if interested. As opinions are subjective in nature, we cannot opine on sound quality or comparison with other units. Usually sales orders are processed within one day, except in the event of natural or human disasters. However, some orders may take up to 2 to 3 days to process. Orders placed after 12 noon, local time, on Friday will be processed the following Monday. We reserve the right to use UPS or any other carriers. Please keep the box and all other packaging material for the carriers inspection. We reserve the right to cancel the listing at any point. Any shock, damage, injury or death is the buyers responsible entirely. International Buyers Please Note. We do not collect or distribute these charges. By purchasing our items, you agree to the terms outlined above and understand that this is a binding legal agreement. Thank you for visiting our store and item listings. Vintage Music Studio, LLC, appreciate your business and wish you a pleasant day. No part may be used without permission. The item “JBL 7126, Professional Series Compressor, Vintage Rack” is in sale since Thursday, August 25, 2011. This item is in the category “Musical Instruments & Gear\Pro Audio Equipment\Vintage Pro Audio Equipment”. The seller is “vintagemusicstudio” and is located in Forest Hills, New York. This item can be shipped worldwide.