6SL7GT TAD Premium SelectedQ: When does a preamp tube become a Premium Selected tube?A: All preamp tubes labeled Premium Selected have passed the following tests:- Low Noise Test- Microphonic Test- Gain Test- Sonic Tests- Shock Tests- Listening Tests- Balanced Output TestMatching and Selecting OptionsIn the Balance-Selection, we select and match our tubes with symmetrical systems regarding their gain level. Matching in Pairs means that two tubes show identical gain, hence, four characteristically identical systems. This matching method includes our Balance-Selection. We highly recommend this matching method for hi-fi systems. TAD Premium Selected/Highgrade tubes are guaranteed for a period of 6 months (according to terms of warranties) for the quality criteria mentioned above. Not RohS CompliantBrown base 6SL7GT Tube with silky clear top end and rich mid-range. Very pleasing tonal charactistic giving live to music. Upgrades 6N9 and the russian 6n9p. Seleced for low noise and gain-balanced triodes. . Pentru alte modele de lampa, va rugam nu ezitati sa ne contactati!Vom verifica cu celeritatea disponibilitatea in stoc in depozitul partenerului externSe pot comanda lampi Matching in PAIRS in set de 2 sau echilibrate, testate si selectate 4, 6 sau 8 bucati in functie de necesitate si desigur disponibilitatea furnizorului nostru extern. Aceste servicii sunt contra cost si difera in functie de model, pentru detalii ne puteti contacta!Comercializam lampi: TAD, Electro-Harmonix, Genalex, Mullard, Psvane, Shuguang, Svetlana, Sovtek, Philips, Tesla, Tung-Sol, JJ, KR Audio, MusicMan, Marshall etc

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