Model Number: 12AX7 / ECC803. Mfr Part Number: 12AX7 / ECC803. The Ultimate 12AX7 enhanced with Gold Pins. Big, warm, and musical. High Gain, ultra-low microphonics, and superb linearity with a dynamic 3-D sound.
Model Number: 12AX7 / ECC803. Mfr Part Number: 12AX7 / ECC803. The Ultimate 12AX7 enhanced with Gold Pins. Big, warm, and musical. High Gain, ultra-low microphonics, and superb linearity with a dynamic 3-D sound.