Item condition is: Pre-Owned / Good / Clean. TESTED. Some paint wear on remote control due to age of item. Requires x2 AAA batteries - not included. Compatible / OEM RCA stereo antenna included. (See Photos) Item(s) will be shipped securely. RCA 256697 Audio CD Stereo System Remote Control - 256697 / 256447 - Originally supplied with Audio System model: RS2520BLK. Product ConditionsYou will always receive the item(s) in the photo(s). I personally photograph all items. Please examine and zoom in on photos as flaws/wear may not be visible from afar on some pre-owned/used items. I do my best to disclose all flaws through pictures and/or descriptions.*Item(s) come from a smoke-free & pet-free environment.ShippingShipping is not always guaranteed on time. Tracking will be provided as soon as possible. Most items are shipped within 1-2 days of receiving payment. Once items are shipped, the arrival time is out of my control.FeedbackI would appreciate if you left positive feedback once the transaction has been completed. I will leave feedback on your profile as well.I strive to achieve the highest level of customer service possible, so if you have any problems, please contact me before leaving negative feedback.QuestionsIf you have any questions, please message me via eBay so I can assist you.Please visit and follow my store as I am frequently uploading new products. Thank you!

Thank you for visiting my store.We take pride in the packing and condition of our products.We pledge to pack our customers valuable products with the utmost care. There is no simple packaging. If you would like to purchase multiple items, please send us a message.We will check the stock. Please check photo and feel free to contact us for more details. I will combine shipping Please save a shipment cost. Check our shop??other items. ?ContactPlease feel free to contact us anytime.We are always happy to help you and happy to find what you are looking for.If you have any trouble with your items please feel free to contact us first, we will do our best ?ShipingFedEx or DHL or Japan Post Office ?International Buyers - Please NoteImport duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyers responsibility. Please check with your countrys customs office to determine what these additional costs will be prior to bidding or buying. Thank you for your understanding.

Tested and working. The knobs above the mid range and ultra high frequency seem to be at a very slight angle. I did not try to fix them. They work just fine and the very subtle angle doesn’t appear to affect anything.

Tested. Works Great! - Clean Audio Control Model D-10 (D-520) Octave Equalizer with Subsonic Filter Ships with plenty of bubble wrap in a sturdy box FREE SAME DAY SHIPPING

Thank you for visiting my store.We take pride in the packing and condition of our products.We pledge to pack our customers valuable products with the utmost care. There is no simple packaging. If you would like to purchase multiple items, please send us a message.We will check the stock. Please check photo and feel free to contact us for more details. I will combine shipping Please save a shipment cost. Check our shop??other items. ?ContactPlease feel free to contact us anytime.We are always happy to help you and happy to find what you are looking for.If you have any trouble with your items please feel free to contact us first, we will do our best ?ShipingFedEx or DHL or Japan Post Office ?International Buyers - Please NoteImport duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyers responsibility. Please check with your countrys customs office to determine what these additional costs will be prior to bidding or buying. Thank you for your understanding.

AudioControlModel 520 Equalizer You are bidding on a superb AudioControl model 520 equalizer with a switchable subsonic filter to protect your system. This is a top quality EQ with rotary style controls and an EQ curve that is very pleasing to the ear. A sub-sonic filter with a very steep roll-off helps protect your equipment from low frequency damage without hindering low frequency performance. This EQ has been carefully tested and is in excellent working order. Output is clear and clean in both channels. The controls and switches have been cleaned and lubed for years of smooth and silent operation. The genuine wood veneer ends have a new coat of oil and look great. Bid with confidence on this EQ. You will be pleased! Features For This Unit: Excellent Cosmetic Condition - Check the Pics! Excellent Working Condition- Scroll down to see how we test items. 5 Bands Per Channel Low Frequency Sub Sonic Filter Flat Switch - Makes It Easy to Compare EQ Effects Check out our other vintage audio auctions!Browse our selection of vintage audio parts!Be sure to add us to your favorites list!

Item condition is: Pre-Owned / Good / Clean. TESTED. Some paint wear on remote control due to age of item. Requires x2 AAA batteries - not included. Compatible / OEM RCA stereo antenna included. (See Photos) Item(s) will be shipped securely. RCA 256697 Audio CD Stereo System Remote Control - 256697 / 256447 - Originally supplied with Audio System model: RS2520BLK. Product ConditionsYou will always receive the item(s) in the photo(s). I personally photograph all items. Please examine and zoom in on photos as flaws/wear may not be visible from afar on some pre-owned/used items. I do my best to disclose all flaws through pictures and/or descriptions.*Item(s) come from a smoke-free & pet-free environment.ShippingShipping is not always guaranteed on time. Tracking will be provided as soon as possible. Most items are shipped within 1-2 days of receiving payment. Once items are shipped, the arrival time is out of my control.FeedbackI would appreciate if you left positive feedback once the transaction has been completed. I will leave feedback on your profile as well.I strive to achieve the highest level of customer service possible, so if you have any problems, please contact me before leaving negative feedback.QuestionsIf you have any questions, please message me via eBay so I can assist you.Please visit and follow my store as I am frequently uploading new products. Thank you!

AudioControl model 520 Series B Equalizer / Speaker Control System / Subsonic Filter Selling AS-IS. Unit is UNTESTED. When plugged in we can hear that it powers on. No further testing has been conducted. Shows areas of cosmetic wear/scratches. Please see pictures for cosmetic condition and detail of everything included. Please feel free to contact us if you have any questions. Thank you so much for shopping with RoadTreasureTrading.

*Brand:       Sony *Compatible Model: SUS5420BLK SUS5520 *Type:               Remote Control *Quantity:        1pc  ** Sold exactly as pictures shown, without package or battery. Original Sony Audio SUS5420BLK SUS5520 Remote Control *Brand: Sony *Compatible Model: SUS5420BLK SUS5520 *Type: Remote Control *Quantity: 1pc ** Sold exactly as pictures shown, without package or battery.

This listing is for a vintage audio control model d-520 equalizer/speaker control system with subsonic filter in good condition. One of the plastic knobs on the 15.5 Z band is cracked. Its still functions fine, and the slider/potentiometer is unaffected. You just kind of have to support the knob itself when youre sliding it up and down. Please see the last pic . Also, one of the rubber feet on the bottom is missing, and there is a felt pad in place to compensate. would approximate its age as being from the 1970s - 1980s. Works great for home and pro audio systems. The front controls are tape monitor, subsonic filter, equalize program, left and right slider controls for 36, 60, 120, 1khz, and 15.5 khz. On back, there are RCA type inputs/ outputs two are for tape, and two are for main with individual lefts and rights. Eight total. This is a very cool vintage unit, that is still made of aluminum and real wood! There is a non-negotiable fixed shipping rate of $25.00 USA shipping and handling within the 48 states on this item. Item has been described to the best of my ability, and is therefore offered as is, with all sales being final. No refunds, either in full, or partial will be offered upon completion of sale. This protects the buyer from receiving items that have been tampered with and/or altered. Questions are encouraged before actual purchase. Please do not assume combined shipping without prior inquiry. I do my best to get items shipped the day after payment. Insurance will be a required option in most cases. Item may also require signature confirmation.International shipments paid may be subject to a higher shipping rate, as insurance will be mandatory, and insurance is not offered on all classes of mail. As per eBay rules, the following is being included to avoid any misunderstandings: International Buyers - Please Note: •Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyers responsibility. •Please check with your countrys customs office to determine what these additional costs will be prior to bidding/buying. •These charges are normally collected by the delivering freight (shipping) company or when you pick the item up – do not confuse them for additional shipping charges. •We do not mark merchandise values below value or mark items as gifts - US and International government regulations prohibit such behavior.PLEASE MAKE SURE YOU ARE IN FULL AGREEMENT WITH ALL TERMS PRIOR TO PURCHASE! Thanks for looking, and good luck if you decide to bid.

Item condition is: Pre-Owned / Good / Clean. TESTED. Some paint wear on remote control due to age of item. Requires x2 AAA batteries - not included. Compatible / OEM RCA stereo antenna included. (See Photos) Item(s) will be shipped securely. RCA 256697 Audio CD Stereo System Remote Control - 256697 / 256447 - Originally supplied with Audio System model: RS2520BLK. Product ConditionsYou will always receive the item(s) in the photo(s). I personally photograph all items. Please examine and zoom in on photos as flaws/wear may not be visible from afar on some pre-owned/used items. I do my best to disclose all flaws through pictures and/or descriptions.*Item(s) come from a smoke-free & pet-free environment.ShippingShipping is not always guaranteed on time. Tracking will be provided as soon as possible. Most items are shipped within 1-2 days of receiving payment. Once items are shipped, the arrival time is out of my control.FeedbackI would appreciate if you left positive feedback once the transaction has been completed. I will leave feedback on your profile as well.I strive to achieve the highest level of customer service possible, so if you have any problems, please contact me before leaving negative feedback.QuestionsIf you have any questions, please message me via eBay so I can assist you.Please visit and follow my store as I am frequently uploading new products. Thank you!

This Audio Control Model D-520 Subsonic Filter Equalizer has been tested and is in good working order. Its sleek design and brand reputation make it a popular choice for audio enthusiasts. The equalizer is specifically designed to enhance the quality of sound and improve the overall listening experience. Its various settings and controls allow users to customize their sound to their liking. The device is compatible with a range of audio systems and can easily be integrated into any home audio setup.

This Audio Control Model D-520 Subsonic Filter Equalizer has been tested and is in good working order. Its sleek design and brand reputation make it a popular choice for audio enthusiasts. The equalizer is specifically designed to enhance the quality of sound and improve the overall listening experience. Its various settings and controls allow users to customize their sound to their liking. The device is compatible with a range of audio systems and can easily be integrated into any home audio setup.

This Audio Control Model D-520 Subsonic Filter Equalizer has been tested and is in good working order. Its sleek design and brand reputation make it a popular choice for audio enthusiasts. The equalizer is specifically designed to enhance the quality of sound and improve the overall listening experience. Its various settings and controls allow users to customize their sound to their liking. The device is compatible with a range of audio systems and can easily be integrated into any home audio setup.

This Audio Control Model D-520 Subsonic Filter Equalizer has been tested and is in good working order. Its sleek design and brand reputation make it a popular choice for audio enthusiasts. The equalizer is specifically designed to enhance the quality of sound and improve the overall listening experience. Its various settings and controls allow users to customize their sound to their liking. The device is compatible with a range of audio systems and can easily be integrated into any home audio setup.

Condition: Pre-Owned Good See photos. This will be shipped quickly and carefully.

Item condition is: Pre-Owned / Good / Clean. TESTED. Some paint wear on remote control due to age of item. Requires x2 AAA batteries - not included. Compatible / OEM RCA stereo antenna included. (See Photos) Item(s) will be shipped securely. RCA 256697 Audio CD Stereo System Remote Control - 256697 / 256447 - Originally supplied with Audio System model: RS2520BLK. Product ConditionsYou will always receive the item(s) in the photo(s). I personally photograph all items. Please examine and zoom in on photos as flaws/wear may not be visible from afar on some pre-owned/used items. I do my best to disclose all flaws through pictures and/or descriptions.*Item(s) come from a smoke-free & pet-free environment.ShippingShipping is not always guaranteed on time. Tracking will be provided as soon as possible. Most items are shipped within 1-2 days of receiving payment. Once items are shipped, the arrival time is out of my control.FeedbackI would appreciate if you left positive feedback once the transaction has been completed. I will leave feedback on your profile as well.I strive to achieve the highest level of customer service possible, so if you have any problems, please contact me before leaving negative feedback.QuestionsIf you have any questions, please message me via eBay so I can assist you.Please visit and follow my store as I am frequently uploading new products. Thank you!

This Audio Control Model D-520 Subsonic Filter Equalizer has been tested and is in good working order. Its sleek design and brand reputation make it a popular choice for audio enthusiasts. The equalizer is specifically designed to enhance the quality of sound and improve the overall listening experience. Its various settings and controls allow users to customize their sound to their liking. The device is compatible with a range of audio systems and can easily be integrated into any home audio setup.

Condition: Pre-Owned Good See photos. This will be shipped quickly and carefully.

This Audio Control Model D-520 Subsonic Filter Equalizer has been tested and is in good working order. Its sleek design and brand reputation make it a popular choice for audio enthusiasts. The equalizer is specifically designed to enhance the quality of sound and improve the overall listening experience. Its various settings and controls allow users to customize their sound to their liking. The device is compatible with a range of audio systems and can easily be integrated into any home audio setup.