PL509 40KG6 Philips Holland

…PL509 40KG6 Philips Holland, made in Philips Heerlen plant. True triple mica construction and three holes in plates. “AAA” Philips type code for PL509, delta3A3 & delta1E1 codes.Triple mica spacers clearly visible on photos above. This is matched quad within 10%, perfect for push pull PL509/PL519 40KG6/40KG6A amplifier.   Click to see all EL519 6KG6 PL519 40KG6 and other SWEEP TUBES in stock…

ECC82 Philips 12AU7 Miniwatt Made in Holland

…Genuine Philips, Made in Holland ECC82 12AU7, Gf8 βˆ†3J2-βˆ†3K4 codes, Heerlen plant October – November 1963 ECC82 Philips Miniwatt, original boxes and original packaging with 200 units, perfectly matched “platinum” pair   Click to see all ECC82 12AU7 TUBES in stock…

ECC81 12AT7 Philips Holland Flat Foil Crossbar D Getter

…These are geniuine Philips ECC81 12AT7, Made in Herlen, Holland, flat foil crossbar D getter, single plate hole and Tk1 delta 0A codes. Made in 1960 in Herlen tube plant It’s also possible to find them labeled Amperex Bugle boy 12AT7 ECC81 No side holes in plates, Tk1 Δ0A Heerlen code is clearly visible on 1st photo. These tubes are used, but tested 90-105%. Here is shown perfectly matched quad.   Click to see all ECC81 12AT7 TUBES in stock…

Linear Amplifier with GU50 450W (Π“Π£-50) 27-28 MHz

…front panel, but I never did it. Back of amplifier, tube socket and integrated tube cooler, 220V input and RF output. A look under the hub, original instrument and relay were used, also switches, RFC. This torus transformer is just for heating of GU50 and relays. Under the chassis, the secret of small size is in high voltage power supply, multiplier directly from 220V! This is few hours modification I’ve done almost 25 years ago, when Zettagi was…

6SN7GT Philips Holland Eindhoven

…st NOS, with no signs of usage on top of glass envelope. 1st photo: 1st 5 tubes Eindhoven, than 3 The tubes with slightly higher coating, they are r93 L7H & L7G codes, made in Belgium, Bruxelles Mazda tube plant in 1957. last photo: top row, the tube in the middle with visible signs of use is tested used, mutual conductance around 2150 uMhos.   Click to see All 6SN7 6SN7GT 12SN7 12SN7GT in stock…

813 EE English Electric Valve Co LTD (Made in England)

…Great sounding 813 QB2/250 CV424 TG4048 pentode for audio use, very rare, British made, new old stock, special quality for British army, just one pair left in stock Matched pair with RH and RG codes. Tubes come in original British army boxes Top ceramic spacer and base spacer, great precision, every detail in this construction is awesome. Click to see All 813 VT-144 in stock  …

ECC82 12AU7 Brimar Made in England BVA

…mar is not so famous brand like Mullard, but tubes are exceptional quality and sounding for hi end audio use. It’s very smooth sounding tube, lot of details and perfect ballance and very long life! From left to the right: Long black plates square getter — Long ribbed gray plates side getter (almost identical plates like Mullard long ribbed plates and similar sound characheristics) — Short ribbed gray plates top ring getter Here is clearly vissible…

E188CC 7308 Valvo Holland

…E188CC 7308 Valvo Made in Holland, dual stage ring getter, VR8 delta Heerlen codes They are also some of the best sounding 6DJ8 / ECC88 / 6922 / E88CC ever made. “ “ “ ” Perfectlly matched pair within 5% all four triodes, same codes   Click to see all ECC88 6DJ8 E88CC 6922 in stock  …