Description
Marantz 2325 Vintage Stereophonic Receiver - Full SkyFi Restoration SkyFi Restoration Notes:This Marantz 2325 underwent an extensive in-house restoration here at SkyFi. The scope of the restoration was to make the unit look beautiful again while making it reliable for the long term.For the electronic portion of the restoration we focused on the most important audio circuity. The power supply, preamp, phono stage, and power amp sections have all been fully addressed.We also checked over the dolby and tuner circuits to verify proper function but have not opted for bulk parts replacement in those sections.Below is an outline of all of the work that was performed. Power Supply:- All electrolytic capacitors replaced.- Rectifier diodes replaced with improved components.- Regulator pass transistors replaced with new silicon devices with higher heat tolerance, thermal compound refreshed.- Protection relay removed, contacts cleaned, and reinstalled.Phono Stage:- All known troublemaker transistors and diodes replaced.- All electrolytic and tantalum capacitors replaced.- 1uF capacitors upgraded to polypropylene film.Preamp / Tone Control Board:- All known troublemaker transistors replaced.- BA312 ICs replaced with more reliable discrete replacements.- All electrolytic and tantalum caps replaced.- 1uF capacitors upgraded to polypropylene film.Buffer Amplifier:- Known troublemaker transistors replaced.- All electrolytic capacitors replaced.Power Amplifier Boards:- Differential input pairs replaced with matched components and have been thermally coupled for more reliable DC offset tracking.- All electrolytic and tantalum capacitors replaced.- Known troublemaker transistors replaced.- 1uF capacitors upgraded to polypropylene film.- Overheated 1.2K resistors upgraded to 5W parts with better heat handling capability.Illumination:- Main dial lamp housing replaced.- All indictor lamps replaced.- Dial and meter lamps replaced with warm white LED.- Dial and meter vellum paper replaced.- Dial pointer replaced with LED.Additional:- All electrolytic and tantalum caps replaced on filter board.- Faceplate, knobs, and chassis cleaned and detailed.- Main filter capacitors removed from circuit and tested for Value, ESR, and Leakage - PASS.- All controls cleaned.Service Manual Alignment:- Regulated power supply voltage set.- DC offset and Bias set on both amplifier channels.- Phono distortion calibration completed.- FM tuner aligned.- AM tuner aligned.- NOTE: No Dolby alignment was performed.Testing:- All controls tested for proper function.- Tuner sensitivity, stereo, dial tracking PASS.- Rated power check 125W into 8 ohms both channel driven PASS.- THD Check PASS.Cosmetic Notes:- This unit came to us with a damaged wood vinyl wrapped top cover. We have removed the original wrap and painted the cover with a hammered dark gray enamel. - Dial is lettering is a bit distorted around the 1000AM mark.Ownership:UnknownConnections:RCA Jacks for Inputs and Outputs, Spring Loaded Speaker Terminals, Captive Power Cord,General Sound:Big beautiful musical sound with little fatigue.Cosmetic Condition:7/10 = Good. One or two minor scratches. Well Maintained. See our detailed rating description here.Working Condition:Working perfectly and tested in our lab and listening room.Included:Just the unit and its captive power cord.Packing:Will be packed using our highly developed in-house process and custom packing materials.SkyFi Audio - Curators of Vintage Audio Gear SkyFi Audio is a small startup business specializing in the purchase, reconditioning, and reselling of high end audio equipment. We only buy equipment that we admire and are passionate about. No mid-fi, no gimmicks, no junk. Each piece of equipment is cosmetically restored and fully tested in our well-equipped lab by an engineer with 30+ years of experience in the HiFi world. If it does not meet or exceed the original manufactures specifications, it will not be sold. We are very selective about the equipment we purchase, focusing on mostly analog, high-build quality, American, and European built units. Please note we are not a repair shop and only restore what we own. ---------- PURCHASING GUIDELINES: 1) This item will be professionally packaged and insured for safe transit to your home unless you opt for local pickup from our shop. All local pickup items are only wrapped in industrial strength clear stretch wrap if the original manufacturer packaging is unavailable. Local pickup is available in Glen Rock, NJ, 07452, just a half hour drive from Midtown Manhattan, with convenient parking near our building. If we don’t have the original packaging, we use heavy-duty double-ply corrugated boxes with custom made to your item SealedAir Instapak expanding foam custom inserts. In many cases this has proven to be better than the original packaging! We also use high quality fiber reinforced tape to seal our packages. Lightweight items will be bubble wrapped and shipped in a high-quality box. 2) We will not review or accept any offers that do not go through the official eBay system. We have too many items for sale and it’s nearly impossible to keep track of offers outside of the official system. Please do not message, email, or text any offers. 3) All listings are eligible for the eBay Global Shipping Program unless the item exceeds the maximum weight/price requirements to your country. If this is the case simply message us via eBay. We only accept bank wire transfers for international payments and frequently ship worldwide via UPS. 4) Please ensure your shipping address is correct within eBay as we will ONLY ship to the eBay/PayPal Confirmed Shipping Address. No exceptions. 5) eBay may charge and collect sales tax to your state/jurisdiction which we have no control over. eBay v1.8 Marantz 2325 Vintage Stereophonic Receiver - Full SkyFi Restoration SkyFi Restoration Notes: This Marantz 2325 underwent an extensive in-house restoration here at SkyFi. The scope of the restoration was to make the unit look beautiful again while making it reliable for the long term. For the electronic portion of the restoration we focuséd on the most important audio circuity. The power supply, preamp, phono stage, and power amp sections have all been fully addressed. We also checked over the dolby and tuner circuits to verify proper function but have not opted for bulk parts replacement in those sections. Below is an outline of all of the work that was performed. Power Supply: - All electrolytic capacitors replaced. - Rectifier diodes replaced with improved components. - Regulator pass transistors replaced with new silicon devices with higher heat tolerance, thermal compound refreshed. - Protection relay removed, contacts cleaned, and reinstalled. Phono Stage: - All known troublemaker transistors and diodes replaced. - All electrolytic and tantalum capacitors replaced. - 1uF capacitors upgraded to polypropylene film. Preamp / Tone Control Board: - All known troublemaker transistors replaced. - BA312 ICs replaced with more reliable discrete replacements. - All electrolytic and tantalum caps replaced. - 1uF capacitors upgraded to polypropylene film. Buffer Amplifier: - Known troublemaker transistors replaced. - All electrolytic capacitors replaced. Power Amplifier Boards: - Differential input pairs replaced with matched components and have been thermally coupled for more reliable DC offset tracking. - All electrolytic and tantalum capacitors replaced. - Known troublemaker transistors replaced. - 1uF capacitors upgraded to polypropylene film. - Overheated 1.2K resistors upgraded to 5W parts with better heat handling capability. Illumination: - Main dial lamp housing replaced. - All indictor lamps replaced. - Dial and meter lamps replaced with warm white LED. - Dial and meter vellum paper replaced. - Dial pointer replaced with LED. Additional: - All electrolytic and tantalum caps replaced on filter board. - Faceplate, knobs, and chassis cleaned and detailed. - Main filter capacitors removed from circuit and tested for Value, ESR, and Leakage - PASS. - All controls cleaned. Service Manual Alignment: - Regulated power supply voltage set. - DC offset and Bias set on both amplifier channels. - Phono distortion calibration completed. - FM tuner aligned. - AM tuner aligned. - NOTE: No Dolby alignment was performed. Testing: - All controls tested for proper function. - Tuner sensitivity, stereo, dial tracking PASS. - Rated power check 125W into 8 ohms both channel driven PASS. - THD Check PASS. Cosmetic Notes: - This unit came to us with a damaged wood vinyl wrapped top cover. We have removed the original wrap and painted the cover with a hammered dark gray enamel. - Dial is lettering is a bit distorted around the 1000AM mark. Ownership: Unknown Connections: RCA Jacks for Inputs and Outputs, Spring Loaded Speaker Terminals, Captive Power Cord, General Sound: Big beautiful musical sound with little fatigue. Cosmetic Condition: 7/10 = Good. One or two minor scratches. Well Maintained. See our detailed rating description here. Working Condition: Working perfectly and tested in our lab and listening room. Included: Just the unit and its captive power cord. Packing: Will be packed using our highly developed in-house process and custom packing materials. SkyFi Audio - Curators of Vintage Audio Gear SkyFi Audio is a small startup business specializing in the purchase, reconditioning, and reselling of high end audio equipment. We only buy equipment that we admire and are passionate about. No mid-fi, no gimmicks, no junk. Each piece of equipment is cosmetically restored and fully tested in our well-equipped lab by an engineer with 30+ years of experience in the HiFi world. If it does not meet or exceed the original manufactures specifications, it will not be sold. We are very selective about the equipment we purchase, focusing on mostly analog, high-build quality, American, and European built units. Please note we are not a repair shop and only restore what we own. ---------- PURCHASING GUIDELINES: 1) This item will be professionally packaged and insured for safe transit to your home unless you opt for local pickup from our shop. All local pickup items are only wrapped in industrial strength clear stretch wrap if the original manufacturer packaging is unavailable. Local pickup is available in Glen Rock, NJ, 07452, just a half hour drive from Midtown Manhattan, with convenient parking near our building. If we don’t have the original packaging, we use heavy-duty double-ply corrugated boxes with custom made to your item SealedAir Instapak expanding foam custom inserts. In many cases this has proven to be better than the original packaging! We also use high quality fiber reinforced tape to seal our packages. Lightweight items will be bubble wrapped and shipped in a high-quality box. 2) We will not review or accept any offers that do not go through the official eBay system. We have too many items for sale and it’s nearly impossible to keep track of offers outside of the official system. Please do not message, email, or text any offers. 3) All listings are eligible for the eBay Global Shipping Program unless the item exceeds the maximum weight/price requirements to your country. If this is the case simply message us via eBay. We only accept bank wire transfers for international payments and frequently ship worldwide via UPS. 4) Please ensure your shipping address is correct within eBay as we will ONLY ship to the eBay/PayPal Confirmed Shipping Address. No exceptions. 5) eBay may charge and collect sales tax to your state/jurisdiction which we have no control over. eBay v1.8 × × × × × × × × × × × × × × × × × × × × Buy now and save! Tell a friend Visit store Watch now Postage info UPS Ground - $0.00 Local Pickup - $0.00 Click the Postage tab above the listing description for more info Additional delivery notes PICK UP OPTION Our items are available for pick-up. Pick up procedure is as follows: Purchase the item through eBay Email us to coordinate pickup PAYING VIA PAYPAL We accept PayPal on our all our items so you can shop with confidence. Simple choose the PayPal option when proceeding through the checkout. Additional Information No additional information at this time Ask seller a question You might also like Dynavector 10x3 High-Output MC Phono Cartridge Music Reference RM-5 MK II Tube Preamplifier with Phono Music Reference RM-9 Tube Amplifier With EL34s Marantz Model 150 Vintage AM/FM Tuner with Scope Contact To contact our Customer Service Team, simply click the button here and our Customer Service team will be happy to assist. Ask seller a question © SkyFi Audio Postage Click the Postage tab above the listing description for more info Payment Accepted Payment Methods PayPal Returns Returns are not accepted Seller will pay for return shipping. eBay integration by
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