EAR834-Tube Phono Amplifier(MM) RIAA Finished Board Summary MOFI-EAR834-Phono Amp(MM), It is based on the core circuit of the EAR834 phono amplifier. -Tech highlights Compared with the commonly reproduction of EAR834, it improved: 1?High Voltage?Two-stage buck regulator filter, Two low-pass filter (with a corner frequency of 1.6Hz&16Hz) prevents power noise from being introduced into the amplifier. Provide purer power supply (close to battery). 2?The high-voltage power supply uses MOSFET as pass transistors, which have a sense of tube sound characteristics but rejecting the rectification and regulation noise. 3?high-voltage soft-start feature is included which will take about 5 second to reach the designed voltage protecting the tube from any voltage shock. 4?heater-voltage soft-start feature for vacuum heater is included which will take about 5 second to reach the designed voltage(12.6v) protecting the tube from any voltage shock and extending life. 5?all-in-one design, single-point grounding, ground resistance is close to the 0.02 ohm resistance value, low noisedesign. 6?PCB is Small with double-sided smt. 7?The triangular tube layout reduces the number of dual-channel common tubes, further improves the separation and reduces crosstalk. 8?Mirror HR-pin, please shift the tube counterclockwise every three months, reduce tube magnetization, further extend tube life and save money. 9?More cost-effective sound modification plan. PCB SIZE?153x153x1.6mm 1oz Cu, HASL with lead. Power requirements: Heater Volt: AC12~15V, I?0.8A, Best:14VAC@1A High Volt: AC220~260V, I?0.02A, Best:240VAC@0.05A Finished board: Based on the well-tested board on the standard version kit, we verified all key points' voltage, and used the signal generator and oscilloscope for analog waveform double verification. We will not use this board for listening test. All finished pcbs are all carefully hand-soldered and fully tests, so the price is higher and less cost performance. Price-sensitive consumers but with have DIY ability are recommended to choose the kit.

We have EAR 834P tube phono preamplifier for sale.Cosmetically it is in as New condition.It has been tested. And It works and sound great.This is MM version. Needs a separate step up for MC cartridges. We ship worldwide via USPS Priority Mail.Thanks for looking.

The worlds largest online retailer of pre-owned audio Product DescriptionWho we areWhat we doOur ProcessOur Policies EAR 834P Tube MM / MC Phono Preamplifier; E.A.R.; 834-P Product SKU: 53510 Voltage: 100 - 120V # of Owners: 1 Service History: None Serial Number: 153397 Age: Unknown Tobacco Exposure: No MSRP: $1895 Cosmetic Description: Good cosmetic condition with some minor visible cosmetic wear including a few barely visible scratches along the faceplate and chassis of the unit. This item shows some wear consistent with its age but is still presentable and sounds wonderful. What is Included: Preamplifier, Three ECC83 tubes, Manual, Power cable, Factory packaging Other Notes: This item includes the optional MM/MC switch. The EAR 834P is a remarkable piece of work: a reference-quality phono preamplifier that would feel at home in a system of any price. Stereophile Functional Notes: Operational condition of this item is excellent, fully tested and no issues found. Shipping: Cost to ship this item within the contiguous United States is a flat rate of $37- including packaging and insurance. For all other locations including Hawaii, Puerto Rico and Alaska, please request a quote prior to purchase. Items with factory packaging will be double boxed. When factory packaging not available re-usable shipping box with custom injected-foam mold will be used. (for all items over 10 lbs). Note that all items valued over $750 will require a signature upon delivery. 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.

We have EAR 834P tube phono preamplifier for sale.Cosmetically it is in as New condition.It has been tested. And It works and sound great.This is MM version. Needs a separate step up for MC cartridges. We ship worldwide via USPS Priority Mail.Thanks for looking.

We have EAR 834P tube phono preamplifier for sale.Cosmetically it is in as New condition.It has been tested. And It works and sound great.This is MM version. Needs a separate step up for MC cartridges. We ship worldwide via USPS Priority Mail.Thanks for looking.

We use a 24 hour courier service but please allow up to 3 days handling time as a lot of our items are large and timeconsuming to package. Many thanks :) Fully working and tested EAR 834P valve MM & MC switchable Phonostage. Fully working and tested, great sounding! Valves are all SOVTEK. Very little in the way of cosmetic imperfections. One of finest valve stages available.A true audio classic. Please inspect the pictures (please also use the zoom function on the photos) and be sure of what you are buying, please don’t buy this if you are at all unsure, I will answer any questions you have, just email BEFORE PURCHASING. This is a used item and has been fairly described to the best of our ability, it has not been serviced by us, just described in it’s current operational and cosmetic order. If you are not happy with any item, we can arrange collection from you for a full refund (even if you are outside the UK) We will not provide any partial refunds and will not cover any restoration, detailed or internal cleaning, repairs or modification costs. Any questions regarding out of eBay deals will be ignored Any items suspected missing in transit, must be reported to us within 10 days. Shipping We ship using a 24 hour courier. Please allow up to 3 days handling time as a lot of our items are large and take time to package well. Collections Collections from our unit in Bordon are available on Wednesdays and Fridays. Visit our storeHi-Fi Hangar Vintage hifi specialists Other PROJECTS, SPARES & REPAIRS HI-FI & AUDIO EQUIPMENT AMPLIFIERS DISK PLAYERS (CD/DVD/MD/SACD) TUNERS CASSETTE/TAPE DECKS SPEAKERS STUDIO EQUIPMENT TURNTABLES/RECORD PLAYERS CARTRIDGES TONEARMS MERCHANDISE T-SHIRTS ACCESSORIES Payment We take payment through the ebay managed payment system, Shipping We ship using a 24 hour courier. Please allow up to 3 days handling time as a lot of our items are large and take time to package well. _gsrx_vers_1545 (GS 9.4.1 (1545))

The phono pre functions like a gem. It’s missing the switch on the back where it says MM/MC because it’s strictly MM. throwing in 3 1960 Telefunken 12ax7 with the distinctive diamond on the bottom. I have 3 Sylvania JAN tubes I’ll just add with the order at no cost.

We have EAR 834P tube phono preamplifier for sale.Cosmetically it is in as New condition.It has been tested. And It works and sound great.We ship worldwide via USPS Priority Mail.Thanks for looking.

We have EAR 834P tube phono preamplifier for sale.Cosmetically it is in as New condition.It has been tested. And It works and sound great.We ship worldwide via USPS Priority Mail.Thanks for looking.

EAR 834P MM/MC Phono stage .Superb sound. Superb condition. See pics for very slight signs of use . No Box or Instructions . Collection from DL7