Click to expand Tap to zoom NTE Electronics NTE725 Replaces ECG725, GEIC-19, SK3162 Dual Lo-Noise Audio by EcoTech Solutions Inc. Sale $15.00 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart NTE Electronics NTE725 Replaces ECG725, GEIC-19, SK3162 Dual Lo-Noise Audio Preamp/ Operational Amplifier