My tube line stage came with stock Chinese tubes and the sound quality had always been substandard and then after a couple of years of use one tube developed noise. I saw a review noting that the "GTA" version of the 6SN7 may have more desirable sonics than other varieties. These tubes are quiet and very musical. They are not a matched pair and there is a slight channel imbalance but my power amplifier following the tube stage has gain controls, so this is not a concern. Tubes arrived quickly and well-packaged. I am very pleased with this purchase.
Verified purchase: Yes
I replaced an identical tube (different lot number from 5-09) and got the sound back in my mother's old Magnavox record player. The part is exactly as described and works perfectly.
Verified purchase: Yes
Packed very nicely. A+++++++++++
Verified purchase: Yes | Condition: Pre-owned
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