The worlds largest online retailer of pre-owned audio Product DescriptionWho we areWhat we doOur ProcessOur Policies Pass Labs Aleph 1 Mono Power Amplifier; Black Pair; Serviced; Re-capped Product SKU: 53519 Age: Unknown Tobacco Exposure: No Voltage: 120V # of Owners: 1 MSRP: $12500 Cosmetic Description: Good cosmetic condition with some minor visible cosmetic wear including a few nicks along the heatsink fins on the front of both amplifiers and on the left side of one amplifier. A couple minor scuffs on the top surface of both amps. There is a minor spot of discoloration on the top surface of one amplifier. This item shows some wear consistent with its age but is still presentable and sounds wonderful. What is Included: Pair of amplifiers, Power cables, Factory packaging Service History: All electrolytic capacitors professionally replaced in December 2021 at The Music Room. Fully tested, inspected, cleaned, and brought to spec. Functional Notes: Operational condition of this item is excellent, fully tested and no issues found. Shipping: Shipping within the Continental USA is $599- This includes securing to a pallet with adequate protection and shipping via FedEx Freight to a residential address anywhere in the Continental USA. This rate can be reduced by $60 if a commercial delivery address available or if item can be picked up at nearest FedEx Freight depot. FedEx Freight charges a residential delivery fee otherwise which is included in our flat rate charge. Your online source for the best value in new and used audio gear. Visit us online to Buy / Sell / Trade / Consign The Music Room is the largest online retailer of pre-owned HiFi equipment in the world. Headquartered in beautiful Boulder Colorado, The Music Room is a team of 17 strong (and growing) music lovers - all dedicated to one singular mission: delivering the very best online shopping experience in the audio industry - period. We specialize in well-cared for, previously used gear because that is what we are passionate about. We feel that there is nothing more fulfilling than creating a high-performance system on a budget with carefully selected used components, speakers and cables. Our program is safe, secure, fast, fair, hassle-free and highly effective. Visit us online to Buy / Sell / Trade / Consign Buy: Are you looking to get a fair price for your used home audio equipment without all the hassles, headaches, risks and fees? We will appraise your equipment and make you a quick, easy, fair cash offer. Just fill out our “get a quote” form on our homepage to start the process. Sell: We sell in multiple online venues with many (but not all) of our products available in our eBay store. Everything is quality-assured and backed by our best-in-class, satisfaction-guaranteed return policy. Trade: Make your budget go further with a generous trade-in allowance. Let us know what you have available, and we’ll get you the best possible trade-in allowance. We can even assist with shipping & logistics from anywhere in the USA. Just fill out our “get a quote” form on our homepage to start the process. Consign: We offer a hassle-free way for individuals and businesses to liquidate used gear. We’ll handle every step of the process from shipping to appraisals, customer service, fulfillment, and returns: Industry-low rates with no hidden fees Leverage our world-class reputation and get exposure in multiple sales venues - putting your product in front of over 570k monthly shoppers. Our program is Safe, Secure, Fast, Fair, Hassle-Free and Highly Effective. With 100% feedback ratings in every venue in which we sell, you can rest assured that we’ve got your back. Visit us online to Buy / Sell / Trade / Consign Quality Assurance: We offer 15-20 new product listings for sale daily. Each product undergoes an extremely rigorous quality-assurance and listening session by one of our qualified technicians. We understand that buying used audio equipment can be rife with uncertainty and unexpected headaches. Our quality assurance program is informed by a knowledge-base built through delivering over 30,000 used audio products to satisfied customers. We promise to deliver your product in good working order - exactly as described 100% of the time. Support: We don’t just make promises. We stand behind them - your satisfaction is guaranteed. Our support team is ready to help you with any questions you might have before and after the sale. Value: In the never-ending pursuit of high performance, it’s important to stretch your limited budget as far as possible. Used equipment sells for a fraction of new prices, and with a partner like The Music Room you can upgrade any time you like and get most of your money back. There’s simply no better way to maximize a limited audio budget. Packaging: We’ve invested thousands of dollars and countless hours into mastering our state-of-the-art packaging process. Our custom foam-in-place packaging system allows us to safely package almost any item regardless of irregular shapes or sizes. Most importantly, this system provides our customers with a re-usable shipping box which increases the resale value of the product and provides a shipping method for easy, secure returns. Be seen by over 70,000 monthly visitors. Visit us online to Buy / Sell / Trade / Consign Payment: Prompt payment is expected. Paypal is preferred but all forms of payment are accepted. Unpaid item case will be opened after 3 days if no payment received. Shipping Times: Most Domestic orders ship within 1 business day of purchase. For International orders or freight shipments, please allow 2-3 business days. In all cases, tracking information will be emailed to you at the moment the shipping label is created. If you cant find it or have other questions about shipping & logistics, please contact us. Shipping Costs: Flat rate shipping costs are applicable within the contiguous 48 States (USA). These rates are clearly posted on each product page. For an International or custom quote (including Hawaii, PR, AK) please contact us. Returns: Every purchase made on eBay carries a 30-day, satisfaction-guaranteed return policy. If youre not happy with your purchase for any reason or if youve simply changed your mind... no problem. Simply ship it back for a full refund or exchange (minus S&H costs). If you have received an item that is defective in some way, we will make it right. Let us know - we will pay for return shipping and repair the item or refund 100% of your original purchase price.

***NOTE: EACH AMP WILL BE INDIVIDUALLY DOUBLE-BOXED AND HEAVILY PADDED FOR SECURE SHIPPING *** Up for bid is a wonderful pair of Pass Aleph 60 monoblock clone amplifiers. These amps each provide 60 watts of Class A power. The Aleph 60 is the monoblock version of the famous stereo Aleph 5. The Aleph sound is known for fabulous air and space, liquid mids, authoritative bass, and shimmering highs - tube-like solid state. The amps are only 8 months young and now properly burned in. If you've not heard Pass Labs Aleph Series, here is a chance to do so with a modern pair of monoblocks that are hand matched and built with the finest parts. For the engineers and discriminating audiophiles among you, the following demonstrates the exceptional quality of these amplifiers and fidelity to the Pass Aleph build: The amps use a CRCRC power supply, shielded Antek toroids, and rectifier snubbers or a stiff and quiet power supply. The active parts are precision-matched Vishay current source and output MOSFETs, and precision-matched Harris/Fairchild input stage MOSFETs. The amp boards use top-tier Elna Silmic II capacitors bypassed with Wima film caps. The amps were burned in and calibrated for bias, gain, and offset. Balanced (XLR) and Single-Ended (RCA) Inputs. These Class A amps run hot by design, so they must be placed where they have plenty of ventilation. The amp stays true to the Aleph recipe with a few enhancements. The PCBs were designed based on the Aleph 30 and 60 schematics. They can be used to make the other MOSFET-based 2 gain stage Aleph variants (Aleph 3, Aleph 2, Aleph 5, Aleph 1.2). A few enhancements were added to the design: · Added film bypass caps to the 220uF caps in the circuit · Added pot to adjust Aleph Current to precisely 50% · Added pot to adjust DC Offset (in reality, don’t need it based on MOSFET matching, more below) · Added pot to adjust overall amp bias current. · Enhancements that Nelson called out on the “Aleph Design Reloaded” thread. https://www.diyaudio.com/community/threads/the-aleph-design-reloaded.267857/ For complete schematic detail, go to the “Classic Aleph” builder’s thread. The Aleph 60 build document is in post #1, and it shows all of the detailed schematics (original and this amp) and build details. https://www.diyaudio.com/community/threads/classic-aleph-amplifier-for-modern-ums-chassis-builders-thread.382316/ The power MOSFETs came from a pool of over 1000 for matching. This results in the 12 MOSFETs for each channel being matched within less than 5mV (extremely close). For context, Nelson has stated that within 0.1V (100mV) is good enough. 100mV is good, <5mV is great. The input stage MOSFETs are Nelson’s favorite Harris/Fairchild SFP9610. These came from a pool of 850 for matching. Most amps I have built or parts kits I have sold have the 6 required MOSFETs for 2 channels within 1mV across the 6. This results in very good output DC Offset performance. The original Aleph 60 has a 120,000 uf cap bank for the power supply filter, 60,000uF for the positive power supply rail, and 60,000uF for the negative power supply rail. It is a single cap bank without an additional filter stage. This build uses a CRCRC filter cap bank with a total of 176,000uF of capacitance. 44kuF per rail, then parallel 5W power resistors, 22kuF, then parallel 5W power resistors, and final 22kuF caps. This results in lower ripple voltage due to additional capacitance AND 2 filter stages. For context, the standard First Watt amps use a CRC power supply, and this build adds an additional filter stage. Dead silence is the design goal. Adding additional capacitance and using 2 RC stages in the power supply dropped the power supply ripple to very low levels. This build uses 400VA Antek transformers with a cover. The reason for this is the 400VA is the largest offering by Antek to use an integrated shield in the transformer, and the 400VA is the largest transformer cover they offer. This choice drops the noise floor as low as possible. The rectifier bridges use a snubber circuit that damps out ringing between the transformer and the rectifiers. This is one additional way to minimize power supply noise and lower the amplifier’s noise floor. Read all about the snubber concept here: https://www.diyaudio.com/community/threads/simple-no-math-transformer-snubber-using-quasimodo-test-jig.243100/ Thanks for looking and ENJOY THE MUSIC!