(!!!) (Best Value Pair) 12AT7=ECC81 RFT East Germany NOS 1970's (10.0/9.6ma and 10.4/9.6ma) 1-2% matched

1 Low Noise Pair) 12AT7=ECC81 RFT East Germany NOS 1970's same build

1 tube) 10.0/9.6ma Gm=5000/5100 branded ZAERIX

1 tube) 10.4/9.6ma Gm=5100/5000 branded 6201=12AT7 National

Good Ma range 8-10ma

Good Gm range 4500-5500

clean, quiet, extended, balanced, excellent value for the money

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