Very low noise but slightly less gain than a regular 12AX7. Soft highs and edgy, dominant mids. Our recommendation when your amp has microphonic issues. This tube is used in many Fender amps made today. Use the TAD 12AX7WA to maintain your amp’s original tone; choose the TAD 7025WA or TAD 7025/E83CC to improve dynamics, sensitivity and gain for a crispy and more vivid tone.