$35.0 Buy It Now or Best Offer
free,30-Day Returns
Seller Store valtek_2005
(16042) 99.8%,
Location: Bucuresti, default
Ships to: US,
Item: 266103713400
Restocking Fee:No
Return shipping will be paid by:Buyer
All returns accepted:Returns Accepted
Item must be returned within:14 Days
Refund will be given as:Money Back
Philips:Philips
Type:PENTODE
Tube Type:Vacuum Tubes
Product Type:Tubes
EF94:EF94
MPN:EF94
Country/Region of Manufacture:Netherlands
MATCHED PAIR EF94/6AU6 PHILIPS TUBE TESTED WITH ROETEST BY CURVES Lot of 2Pcs Tested with Roetest V10, “the Rolls Royce of tube testers” [emissionlab quote], a wonderful german professional system for testing tubes, it shows everything about a tube. You are looking at a Matched Pair of NOS EF94 , best selected by curves using Roetest V10 professional tube testing system, the best tube tester that exists now, a wonderful device.If you have experience in the field of tubes you can find in the photos and in the details below the testing / sorting procedure and all the results, and if you do not have the necessary experience to understand what is explained you can trust that we deliver only very good tubes.The best method of selecting tubes in pairs is to overlap the G1/Ia curves, the superimposed curves show us that the tubes have the same plate current and the same transconductance in the whole operating range. One point matching method used with analog tube testers is a pretty good compromise solution, but identical tubes at one point can have big differences at higher or lower currents, testing in 20÷50 points with these devices and drawing curves take hours for each tube. Roetest does this quickly and with great precision. This is the best way to select pairs, based on overlapping curves. The tubes meet datasheet specifications, first the quality tests – filament test, shorts test, gassy test (Ig1, vacuum factor, Ia variation with 1M2 grid series resistor), kathode isolation (leakage to filament), then quantity tests – value of current for plate, G1, value for transconductance, gain, G1 curve, Ia curve etc., all results for these tests can be seen on te datasheet delivered for each tube. Those who use tubes are more familiar with terms like bias, gain (µ), plate current, slope/transconductance, and maybe someone is wondering what the term „D of plate” in the measured data means. Its value in itself is not so important but it is useful to calculate the other parameters taking into account Barkhausen’s tubular formula S x D x Ri = 1 (slope * penetration * internal resistance=1), where D is –dUg/dUa at Ia=const. Barkhausen vas a german physicist, he was “the guru” of tubes, his theory and formulas guided the entire period of electronic tubes. If you need more details, we are here to answer. Please allow for the following shipping times:EU countries: 5-8 business days, on rare occasions a few days more USA: 10-15 business days, on rare occasions more South East Asia (Japan, Singapore, S. Korea, Hong Kong, Taiwan etc) 10 business days, on rare occasions more India, China, Russia, Kazakhstan, Pakistan, Indonesia, Malaysia, Thailand, Australia, South Africa etc: at least 15 business days, but frequently around 25 business days Please note that shipping cost is calculated at average. If you have any objections please contact me for a specific quotation.
Frequently Asked Questions About MATCHED PAIR EF94/6AU6 PHILIPS TUBE TESTED WITH ROETEST BY CURVES / LOT OF 2 Ps in My Website
swidnw.com is the best online shopping platform where you can buy MATCHED PAIR EF94/6AU6 PHILIPS TUBE TESTED WITH ROETEST BY CURVES / LOT OF 2 Ps from renowned brand(s). swidnw.com delivers the most unique and largest selection of products from across the world especially from the US, UK and India at best prices and the fastest delivery time.
What are the best-selling MATCHED PAIR EF94/6AU6 PHILIPS TUBE TESTED WITH ROETEST BY CURVES / LOT OF 2 Ps on swidnw.com?
swidnw.com helps you to shop online and delivers Moschino to your doorstep. The best-selling Moschino on swidnw.com are: Moschino MOS020/S Womens Large Metal Sunglass DDB3X Gold Copper w Pink 59-16 Love Moschino Purse Borsa Vit Black Genuine Leather Gold Studded Shoulder Bag Moschino Brown Faux Pearl Eyeglasses *FRAMES ONLY* MO084-04 53-16-135 Italy NWOT Moschino Classic Body Powder With Puff New Moschino Women’s 8 Off White Linen Blend Relaxed Pants MOSCHINO COUTURE! Black Classic Shift Dress – Gold Grommets USA 8 GB 10 Moschino by Moschino, 2.5 oz EDT Spray for Women Women’s Moschino Black Tapered Leg Jersey Knit Pants Size 10 Moschino White X Kelloggs Tony The Tiger Graphic Sweatshirt LOVE MOSCHINO Womens Dress Size 46 Size 10 Python Heart Print Logo Long Sleeve Moschino Cheap And Chic Tweed Style 100% Wool Blazer Jacket UK Size 10 Moschino Cheap & Chic Dress Mixed Print Silk Twill Size US 4 Twist-Front Sheath Moschino Cheap & Chic Black Jacket Size 46 IT Moschino Boutique Tweed Jacket Pink Cropped Pearl Buttons Long Sleeves Size 10 M VINTAGE MOSCHINO RARE ESTATE SALE FIND BLACK CAMEO PATCH PULL ON HI LO SKIRT S/M AW20 Moschino Couture Jeremy Scott Shipping Boxes Packaging Materials Overcoat MOSCHINO LEATHER SKIRT Moschino Jeans Women’s Linen Blazer Size 6 Navy Blue Dark Academia Boutique Moschino stretch High Gather Waist skirt Size IT40 USA6 F36 8 Moschino Cheap Chic Eyelet Wiggle Dress White Cotton Italy Boutique Moschino! -Print Ribbon Dress Size 6US -Very chic! Original Price $525 China Airlines x Moschino Business Class Deluxe Travel Amenity Kit French Blue Moschino Cheap And Chick NWT Dress IT 46 Abstract Print Dolman Sleeve Belted BOUTIQUE MOSCHINO Dress Women Sz 6 RARE Designer Branded Signature Novelty Print Moschino Couture Logo Budweiser printed cotton-jersey joggers pants SZ 10 read Moschino MOS508 C9A 53 Women Eyeglasses Moschino Jeans Women Medium IT 42 Jacket Floral Black Button Long Sleeve Moschino Boutique black jacket coat Sz 6 MOSCHINO FOREVER SAILING FOR MEN EDT SPLASH 20×4.5 ML. MINIATURE (PACK OF 20) MOSCHINO Sunglasses (original Retail Price Was $270.00) MOSCHINO BLACK GRAPHIC PRINT LEATHER CLUTCH RETAIL MADE IN ITALY BNWT MOSCHINO Milano Second Bag Pouch Denim Blue Authentic Used Very Good Item Japan Moschino “I Love 70” Watch New Toy 2 Bubble Gum by 3.4 oz EDT for Women Perfume in Box Moschino This Is Not A Moschino Toy Retro Vintage T-Shirt, S-5XL Moschino Pink Signature Tee T-shirt Rare NEW Moschino Vintage Pebbled Leather Lock Travel Handbag Ivory color Rare 90’s Moschino Dress Apricot Sleeveless Fit Flare Bow Hips Sweetheart Neck Cotton 8 Moschino Lettering Logo Calfskin Women’s Belt in Black with Gold Hardware IT 46 Moschino Women’s 189350 One-Piece Patchwork Animal Print Swimsuit Size 1 Love Moschino Dress Womens 4 Black Sweater Dress Long Sleeves Casual Vintage 80’s Franco Moschino Cheap&Chic RARE Happy Things Shirt 16.5 Men NWOT Moschino Couture by Moschino for Women 1.7 oz Deodorant Parfume Natural Spray L’eau Cheap & Chic by Moschino Eau De Toilette Spray 1.7 oz — Love Moschino Black Yellow Dress Club wear Women’s Dress Size US 2 EU 38 NEW Grey Love Moschino Vest Tank Top With Embroidered Print Size GB 10 Moschino Cheap & Chic Wool Beaded Butterfly Collared Sweater Black Sz 8 vintage cheap and chic Moschino Dress Size 6. MOSCHINO x Disney Top Womens Extra Small Short Sleeve Yellow Tee H&M MOSCHINO Moschino 8-Bit ‘This is not a Moschino Toy’ Bear Logo Tee NEW MOSCHINO MOS128/S MVUIR BLUE AUTHENTIC SUNGLASSES W/CASE 57-14 Love Moschino New Solid Red Sheath Sleeveless Fitted Dress 8 NWOT H&MOSCHINO MOSCHINO H&M JACKET PARKA COAT GOLD SIZE XS Moschino baby girl pink cotton teddy bear logo sweatshirt size 12-18 months, 3 Vintage Moschino Cheap Chic Green Large Bow Shift Mini Dress Sz 8 NEW LOVE MOSCHINO BLACK COTTON LOVE & PEACE EMBROIDERY BLOUSE TOP SHIRT,UK 14 MOSCHINO Jeans Vintage Italy Black/White Check Wool Oversized Shirt Size S Vintage 90s y2k Moschino Mare Dress Slinky Embellished US Size 34 Medium MOSCHINO COUTURE Moschino Couture T-shirt Black ZPA0701 Love Moschino Brown Short Sleeve Shirt size L Cheap and Chic Classic by Moschino Eau De Toilette Spray 1.7oz Love Moschino Men’s Airline Logo Short Sleeve T-Shirt NWT Y2K 2000s Love Moschino Pink Silk Lady Bug Mini Dress drop waist ruffles US 8 LOVE MOSCHINO BASEBALL BLACK PANTS STYLE sz IT 42 US 6 NEW RETAIL $354 MOSCHINO CHEAP AND CHIC BOUCLE DRESS 6 CORAL PINK GOLD BUTTONS BOW FRAN FINE Love Moschino Green Ruffle Draped Long Sleeve Shift Dress Size 10 Love Moschino Womens Sequined Tee Shirt Team Moschino Size 6 NWT MOSCHINO WOMEN’S T SHIRT Yellow Flicker Pink Camouflage Logo (U-002) Moschino Cheap & Chic Vintage Mesh Lavender Embroidered Cami Top | IT 44 | UK 12 MOSCHINO COUTURE BLUE JACKET Trompe L’oeil Blazer USA 4 IT38 $2.4K 2021 RUNWAY Vtg Moschino Jeans Mini Dress Cotton Halter Floral Bow Side Zip Black Small Moschino Olive Oyl Silk Scarf Orchard Heart Cottage Designer Italy Vtg MOSCHINO CHEAP & CHIC 90s DA VINCI OLIVE OYL PRINT BLACK DRESS 42 M Moschino Couture Silk Multicolor Watercolor Abstract Floral Peplum Blazer 42 M Moschino Vintage Faux Leather Jacket PVC Blazer Womens US 8 / It 42 MOSCHINO LOVE DRESS SIZE 10 U.K. RARE Love Moschino Love Logo T-Shirt Black Retro Rainbow HTF Size 8 EUC NWT*MOSCHINO Jeans* shirt-blouse*Size 40 (IT)*RED WINE color*Crystals*VINTAGE Moschino Cheap and Chic Sexy White Draped T Shirt 44/10 Moschino H&M DISNEY Daisy Donald Duck Jumper Sweater Dress S MOSCHINO Women’s Beige Tulip Skirt Asymmetric Pencil Skirt Size 8 / 44 / L MOSCHINO Black Calendar Silk Tie ITALY 56”/ 3.5” EC MOSCHINO mens Shirt Vintage 90s All Over Print Made In Italy 2018 MOSCHINO x H&M Hot Pink Disney Minnie Mouse Merino Wool Sweater Dress – S NWT MOSCHINO HOODIE SWEATSHIRT Teddy bears chains cotton white luxury Italy L Boutique Moschino Button Down Sweater Pink 38 BOUTIQUE MOSCHINO PUSSY BOW BLOUSE TOP PINK SIZE 42 NEW WITH TAGS I LOVE LOVE BY MOSCHINO EDT SPRAY 1.0 OZ (WOMEN) NEW IN BOX Boutique Moschino 100% Silk Dress U.K 12 bnwt RARE LOVE MOSCHINO COUTURE CREW NECK SHORT SLEEVE COTTON WHITE DRESS SIZE 4 nwt Moschino MOS130/S 807 BLACK 55/20/140 WOMAN Sunglasses RRP 365$ BNWT Moschino Mare Blue Shirt 52 / L MOSCHINO HEART SHIRT BLOUSE WOMEN’S size 14 Moschino Cheap and Chic Size 8 Strapless Dress Black Cotton Chiffon Overlay Hot! Moschino Toy 2 3pc Set Women Parfum Spy 1.7 oz + Shower Gel + Body Lotion 50% SALE DESIGNER PERFUMES 10 /$19.95 DG M JACOBS MOSCHINO CARTIER+BAG Moschino Jeans Black Tiered Skirt Womens 8 Skirt Belted Short Zipper Moschino Couture Jeremy Scott all over teddy bear policeman pink knit dress US10 Moschino Green Open Toe Floral Detail Shoes Women’s Size 36 1/2 US 5.5 New With Tags Moschino Arm Tape Logo Light Blue Sweatshirt US M (Retail 185$) Mens Pullover Fleece Hoodie