BALANCED GAIN (88.1, 89.2) MAXI-PREAMP TESTED MULLARD CV4004 / 12AX7 / ECC83 NIB

Tested on a Maxi-Preamp II for Gain(Mu), Transconductance(Gm), and Noise(dB). The Maxi-Preamp II tests tubes at 200 VDC plate current.

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