Amperex Bugle Boy 6DJ8 ECC88 Heerlen, Holland matched construction pair.
Test 9000/8600 & 9600/9800 where good is 8400 in a Triplett 3444/Westmore 501 laboratory tube analyzer restored and upgraded by Paul Hart.
Listening tested for excessive low noise & microphonics in a Maxi-preamp 2 tube tester.
All tubes are guaranteed good or may be returned.
Shipping includes insurance.
Please see our other items for more vintage tubes & audio.
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