Made in USA.
Item Category: Vintage Electronics
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(4) Apex Matched JJ Electronic Quad 7591A 7591S Tubes – For Fisher Mac Sansui
Authorized Dealer This listing is for (4) brand new, Apex platinum matched JJ Electronic 7591S tubes as a closely matched Quad. Matched pairs also available. Finally a 7591 that closely matches the NOS tubes used in Fisher and McIntosh Equipment as well as others. If you have an MC225, Fisher 500C/800C or any vintage equipment using the 7591/7591A, you must try these. These are burned in for 48 Hours and matched by Apex . Buy only from an authorized dealer to avoid getting cheap copies. If the price looks to good to be true, it probably is. Look for the factory stickers on the boxes. Our company CTech Electronics stands behind all of our products and services. Should you ever have a problem with our products or services, we will work with you to resolve it as quickly as possible. Check our feedback and bid with confidence. We are a full service company offering parts, tubes and repairs for vintage equipment. Visit our Ebay Store:
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GE NOS 12BH7 12BH7A Ampltrex AT-1000 Matched Pair for McIntosh MC30 MC240 MC275
LIMITED STOCK. ACT QUICKLY. THESE WILL SELL FAST. GE NOS USA 12BH7A MATCHED PAIR CLASSIC USED BY MCINTOSH AND OTHERS IN THE GOLDEN DAYS OF AUDIO This listing is for (2) brand new, old stock factory fresh GE 12BH7A as a matched pair. Tubes are matched for gm on a Amplitrex AT-1000 tester. We tried these in an MC-225 and a pair of MC-30s, and the amplifiers measured better and sounded better. NO SNAKE OIL TREATMENTS HERE. STAY AWAY FROM THAT STUFF UNLESS YOU WANT YOUT TUBE GEAR TO SOUND LIKE 1970s TRANSISTOR GEAR! This is a well constructed 12BH7A, that tests and sounds excellent. They test consistently with very high gm readings. A perfect differential driver tube. This is a requirement for the driver differential amplifier in the McIntosh and other amplifiers. Purchasing a tube without matched sections in these amplifiers is a waste of money and will cause increased distortion. CTech Electronics stands behind all of its products and services. Check our feedback and bid with confidence. We are a full service company offering parts, tubes, equipment and repair/restoration services. We are not just tube resellers like the majority of our competitors. We are fully qualified to service the equipment they are used in and give tecnical help when needed. Please visit our Ebay Store. On Dec-08-09 at 17:08:47 PST, seller added the following information: Note: International Buyers are responsible for all import duties and taxes for the country this item is shipped to. Please consult your customs dept.officials to determine what you will need to pay. CTech Electronics assumes no responsibility for any of these fees. If you cannot pay the fees do not purchase this product as your item will remain in customs and you will not be able to get it out without personally paying the fees.
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– Tested/Matched Pair 2 Tubes 7-Pin JAN 5654W Fully-Tested Vacuum Tubes – Upg…
Exclusive Offers Await!Welcome to our stores! Satisfaction is what we guarantee. – Tested/Matched Pair 2 Tubes 7-Pin JAN 5654W Fully-Tested Vacuum Tubes – Upg… Product Overview As a US seller we stand behind our products. All vintage vacuum tubes sold by Riverstone Audio are backed by our no-nonsense 4-YEAR WARRANTY – THE BEST WARRANTY IN THE AUDIO TUBE BUSINESS! ***IMPORTANT: AMPLIFIER DAMAGE CAN OCCUR IF YOU USE THE WRONG TYPE OF TUBE AS A REPLACEMENT. 5654W tubes are a DIRECT substitute only for 7-pin 6J1, 6J1P / 6J1P-EB / 6Zh1P-EV, 6AK5, 6AK5W, EF95 and 403B tubes. For other substitutions, check with your amplifier manufacturer to verify that 5654W tubes can be used in your particular audio device.*** Package contains a closely matched pair (2 tubes) of vintage US-manufactured GE JAN 5654W vacuum tubes. The tubes are Amplitrex TESTED and MATCHED, and subjected to multiple test cycles to determine stability. Plate current and Gm are BOTH matched to within 3%. Matched tubes undergo a final audio sound check to make certain they are indeed audio quality. With our high standards, 5654W tubes were originally designed as a low-noise premium-grade substitute for 6AK5 and EF95 vacuum tubes. The “W” designation refers to ruggedized military-grade tubes with better quality control and internal design changes to enhance reliability. These vintage tubes have found new life as replacements for 7-pin 6J1, 6J1P (6ZH1P-EV), 6AK5 and EF95 tubes and are commonly used by audiophiles for improved sound quality. When received, we guarantee the tubes will test at NOS levels of 4400 micro-mho or higher and a plate current (ip) of 6.4 mA or higher (tested in fixed-bias mode at a plate and screen voltage of 120 V and a grid voltage of -2.0 V). NOTE: Some amplifiers, such as the Little Dot 1+, MK II and MK III, may require circuit board jumpers to be changed when swapping tubes (procedure is outlined in the Little Dot manual). All vacuum tubes we sell are carefully packed for shipping and will have the “Riverstone Audio” name, logo and QC labels on the boxes. Key Features All vintage vacuum tubes sold by Riverstone Audio are backed by Riverstone’s no-nonsense 4-YEAR warranty. We know what it takes to select the vacuum tubes for long-life low-noise audio applications. TESTED and MATCHED Pair (2 tubes) of low-noise 7-Pin NIB/NOS JAN 5654W Vacuum Tubes. Considered one of the best of the 5654 / 6AK5 / EF95 family of tubes for audio use. Our experienced engineers match vacuum tubes for BOTH plate current and mutual conductance. Test results are provided for all tubes sold by Riverstone Audio and are directly attached to the tube box. We guarantee that the 5654W tubes selected for these matched pairs test at NOS levels at or above 4400 micro-mho and a plate current of 6.4 mA or higher. All tubes we must also pass a specialized life test and an audio sound test. AMPLIFIER DAMAGE CAN OCCUR IF YOU SUBSTITUTE THE WRONG TYPE OF TUBE. 5654W tubes should only be used to directly replace 7-Pin 6J1, 6J1P / 6J1P-EB / 6Zh1P-EV, 6AK5, 6AK5W and EF95 tubes. Do not substiture for other types of 7-pin vacuum tube. All vacuum tubes sold by Riverstone Audio will have the “Riverstone Audio” name, logo and QC label on the boxes. Payment Information ★ Secure payments through eBay. ★ We accept PayPal and all major credit cards. ★ Immediate payment required upon purchase. ★ For any payment issues, please contact our support team. Shipping Information ★ Orders are shipped to the address provided during checkout. Please verify your address. ★ We process orders within 1 business day (excluding weekends and holidays). ★ Standard delivery time is 3-5 business days. ★ We use trusted carriers like UPS, FedEx, and USPS. ★ Shipping is only available within the contiguous United States. No shipping to Alaska, Hawaii, Puerto Rico, or PO Boxes. ★ If there are any shipping delays, please contact us for support. Return Policy ★ We offer a 30-day return policy. ★ If you are not satisfied with your purchase, you can return it within 30 days for a full refund. ★ Please contact us to obtain the return address before sending back any items. ★ Items must be returned in their original condition and packaging.
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– Tested/Matched Pair 2 Tubes 7-Pin JAN 5654W Fully-Tested Vacuum Tubes – Upg…
– Tested/Matched Pair (2 Tubes) 7-Pin JAN 5654W Fully-Tested Vacuum Tubes – Upgrade for 6AK5 / 6J1 / 6J1P / EF95 – JAN 5654W Platinum Grade Pair Description and features As a US seller we stand behind our products. All vintage vacuum tubes sold by are backed by our no-nonsense 4-YEAR – THE IN THE AUDIO TUBE BUSINESS! ***IMPORTANT: AMPLIFIER DAMAGE CAN OCCUR IF YOU USE THE WRONG OF TUBE AS A REPLACEMENT. 5654W tubes are a DIRECT substitute only for 7-pin 6J1, 6J1P / 6J1P-EB / 6Zh1P-EV, 6AK5, 6AK5W, EF95 and 403B tubes. For other substitutions, check with your amplifier manufacturer to verify that 5654W tubes can be used in your particular audio device.*** Package contains a closely matched pair (2 tubes) of vintage US-manufactured GE JAN 5654W vacuum tubes. The tubes are Amplitrex TESTED and MATCHED, and subjected to multiple test cycles to determine stability. Plate current and Gm are BOTH matched to within 3%. Matched tubes undergo a final audio sound check to make certain they are indeed audio quality. With our high standards, 5654W tubes were originally designed as a low-noise premium-grade substitute for 6AK5 and EF95 vacuum tubes. The “W” designation refers to ruggedized military-grade tubes with quality control and internal design changes to enhance reliability. These vintage tubes have found new life as replacements for 7-pin 6J1, 6J1P (6ZH1P-EV), 6AK5 and EF95 tubes and are commonly used by audiophiles for improved sound quality. When received, we guarantee the tubes will test at NOS levels of 4400 micro-mho or higher and a plate current (ip) of 6.4 mA or higher (tested in fixed-bias mode at a plate and screen voltage of 120 V and a grid voltage of -2.0 V). NOTE: Some amplifiers, such as the Little Dot 1+, MK II and MK III, may require circuit board jumpers to be changed when swapping tubes (procedure is outlined in the Little Dot manual). All vacuum tubes we sell are carefully packed for shipping and will have the “” name, logo and QC labels on the boxes. Return Policy ⦿ All our products come with a 30-Day Return Policy. If you would like to return your item and you are within 30 days of the purchase, and it is still in its original condition, you can return the item by contacting us through eBay messaging. ⦿ If you are not 100% satisfied, please let us know the Detailed Problem,We will give you a 100% satisfactory solution ⦿ If you received an incorrect, damaged, defective, or item not as described, contact us for a partial/full refund or replacement on our cost.⦿ Free Shipping and Free Return 30-Days Money Back Guarantee. ☎ For all returned products, buyers MUST contact us for the returning address. Shipping ⦿ We do not ship to a different address. we will ship to the address you provide on the ebay only. Please check your address before purchase. ⦿ It should take 2-4 business days for the product to reach your destination. ⦿ If the product doesn’t reach your destination within the time limit, please give it an additional 1-2 business days in case of postal delays and/or possible technical issues. ⦿ We use a selection of shipping services such as UPS, FedEx, USPS etc. ⦿ We ship only to the 48 contiguous states of America. We do not ship to Hawaii, Alaska, US Protectorates, APO/FPO addresses. Local pickups are not offered. ☎ If it takes any longer than that, please do not hesitate to contact us to resolve the issues. Contact us ☎ Please contact us via eBay message. And your message will be replied within 1 business days. For any queries, please feel free to contact us, we will get back to you as quickly as possible. Customer 100% satisfaction is our first priority and goal. We are always working hard for maintain high standards of excellence and resolve your problem in best way. So your POSITIVE FEEDBACK is very important. If you have any problem of the item, please feel free to let us know before leaving your feedback. We will try our best to solve your problem. About us We are here to give you quality products, competitive pricing and amazing service in order to make sure you get the best deal online, Thank you for your business and the opportunity to serve you.
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2x (PAIR!) TESLA E88CC (=6922 CCa CV2492) Gold Pins, Red Top, 1974 NOS, 100%
2x TESLA E88CC. of original TESLA E88CC tubes. Tesla tubes are respected for their solid build quality, reliability, and detailed, musical sound. They featureGOLD pins, white prints,red top and grey shields between systems.
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E88CC TESLA Top “O” Getter Made in Czechoslovakia Amplitrex Tested
E88CC TESLA. TESTED ON AMPLITREX TUBE TESTER. We specialized in thoroughly tested and screened quality vacuum tubes.We have various type of valves and tubes testers Like Amplitrex AT1000 Advance Digital Tube Tester, Hickok 752a tube tester, AVO Type 160.
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E88CC TESLA Gold Pin Top O Getter Made in Czechoslovakia Amplitrex Tested
Tested Advance Digital Tube Tester Amplitrex AT1000. Top Side “O” Getter. Made in Czechoslovakia. E88CC/6922 TESLA. New in Original Box.