$760.0 Buy It Now or Best Offer
free,30-Day Returns
Seller Store bc-techworks
(334) 100.0%,
Location: Boulder Creek, California
Ships to: US,
Item: 235752157467
All returns accepted:ReturnsNotAccepted
Carver:Carver
Unit Type:Unit
C-1:C-1
MPN:Does Not Apply
Country/Region of Manufacture:United States
Unit Quantity:1
Carver C-1 Preamplifier – Serviced and very UpgradedPlease check images for case condition. There are some small nicks and scratches. I am selling this one as I have one I am keeping Better than a BillD upgrade as all ICs including the Sonic Holography ICs are upgraded for greatly improved sound and detail when used. So now turning on Sonic Holography doesn’t send you back to the slow specs of the original ICs. All electrolytic capacitors replaced with Nichicon, Nichicon Muse, Nichicon Gold, KemetAll controls / switches cleaned – All knobs cleanedAll ICs replaced with sockets and upgradesLED replaced with blue color to show it’s specialHeadphone resistors replaced with lower values for lower impedance and better power transfer. The original RC4136 ICs have a very slow slew rate and gain bandwidth product (How fast they respond and how flat the response is based on volume and frequency) This unit will have FULL amazing sound from your Carver C-1 when using all features as all audio path ICs have been upgraded to well respected and exceptionally rated circuits). A standard BillD upgrade does not touch the tone, subsonic or Sonic Holography system. The (2 custom dual) main ICs for volume and tone are now LM4562 (Very fast and full flat response) The (2 Custom dual ) headphone and phono ICs are now OP1656 (Very fast, high current) The (5 custom dual ICs) Sonic Holography ICs replaced with 5532 Op Amps. (Very nice industry standard) The Power supply was upgraded to handle the extra power needs of the new ICsThe resistors for the headphone circuit were changed to allow more current and better utilize the extra current provided by the OP1656 The ICs are glued down for shipping but the glue comes off easily with alcohol should you want to make further changes. The Original RC4136 is a dual high-performance, low-noise operational amplifier designed for precision audio and general-purpose applications.Slew Rate: 1.7V/usGain Bandwidth Product: 3MHZTHD+N: Specification Unavailable The LM4562 is a dual high-performance, high-fidelity audio operational amplifier designed for ultra-low distortion, low noise, and high slew rate applications. It is optimized for superior audio signal fidelitySlew Rate: ±20V/µs (typ) Gain Bandwidth Product: 55MHzTHD+N: 0.00003% The OP1656 is a precision, low-noise, low-drift operational amplifier designed for high-performance applications requiring exceptional accuracy and stability.Slew Rate: 24V/usGain Bandwidth Product: 53MHZTHD+N: 0.000029% The 5532 is a dual high-performance, low-noise operational amplifier designed for precision audio and general-purpose applications. Slew Rate: 9V/usGain Bandwidth Product: 10MHZTHD+N: 0.005% at 1 kHz * Each upgraded IC was chosen based on its performance and cost. The 5532 is lower cost than the others which was needed due to their quantity. Please ask any questions before purchase. All are sold As Described and As Shown. I do my best to describe the condition. This sale is for Item(s) only as pictured and as listed. No other accessories are included unless specifically mentioned. (No speaker wires or other connectors used to demonstrate the unit are included) ** Please note the attached images before purchasing. All used electronics may have nicks and scrapes and signs of age. Small nicks, bumps or other very small things may happen during shipping. Your purchase says you agree that these are beyond our control and can happen. Also, photo colors may vary due to lighting exposures at the time of capture. All items are cleaned and disinfected on the exterior before photo’s are taken and again before shipment. All items have been cleaned, disinfected, handled, used, stored in a smoke free but cat friendly house. You won’t receive any dirty, smelly, smoke stained items from me. However some units may still have some residual smells that come from age or prior owners. I’m sorry but there are no returns on any of my items as most items do not like being shipped around. . Please check the shipping options. One may be cheaper for you than another. Shipping costs includes packing, handling and insurance. Shipping may be via USPS or UPS depending on how your location changes the costs and value for you. If you have a specific shipping requirement, you must let me know when purchasing.Expensive items are sent insured and possibly sent signature required. Since I use Ebay shipping, I can only ship to the confirmed address on your account.If the item is damaged during transit, I will work with you where I can to ensure you’re satisfied with the process. I will do all I can to make sure you have a positive transaction and that I earn your trust for future purchases. I do not pre-pack and I test and video every item before shipping. So any damage or inconsistency with an item’s condition will be considered as damage while shipping and would be handled as such as long as the seals are intact. I do record serial numbers and or mark items with warranty labels and other means.You are welcome to open your item but doing so and or breaking any seal voids any warranty or guarantee. User must use free tech support before any warrantee returns. We assume no liability for damage or injury to property or persons resulting from the use or installation of any equipment or part we sell. Since I am a small seller and the equipment I sell is vintage and or pre-owned, I cannot offer any extended warrantee’s or guarantee’s. However, Ebay may offer purchasing added insurance on your purchase if that is of concern for you. I do not offer returns since every time something is shipped they are never the same. I also cannot rely on the packing quality done by an individual when an item is returned to feel comfortable reselling an item. By purchasing this item you are agreeing to the conditions stated above. Thank you for your understanding. ** FYI: The cost of the item. Ebay charges sellers 13.25% of what you pay for your item And 13.25% of what you pay for shipping AND 13.5% of of the taxes they collect for the sale. Yes we even have to pay 13.5% based on what they collect for taxes! We actually receive only about 80% of what you pay. Right To Repair: Many new items sold these days are really not meant to be repaired and or are sold by companies who refuse to share schematics or even sell parts to any non warranty center at whatever cost they want to charge. By buying vintage items, not only are you getting high quality items made to be repaired, you are assured of your ability to use and if needed repair your item in the decades to come.
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