Feature: 1. ADVANCED DUAL OP AMP: Operational Amplifier is very suitable for enthusiasts to upgrade the standard OPA2604AP NE5532P 4558D LME49720NA, etc. of the original equipment. 2. GOOD SOUND QUALITY: V4i‑D operational amplifier module sound is warm, natural, and mellow, with unique fever gall, and good listening resistance. 3. HIGH PERFORMANCE: Current Input Bias: 23mA, Voltage Input Offset: 490μV, Slew Rate: 2V/us, Bandwidth: 5MHz, Current Supply: 4mA, Voltage Rating: + ‑4 to + ‑18V. 4. EASY INSTALLATION: The dual op amp module is installed in line, and the dual in line module (can replace the standard in line DIP8 package). 5. APPLICABLE: VV4 dual op amp module can be used in decoders, music players, preamplifiers, headphone power amplifiers, CDs, etc. Specification: Item Type: Operational Amplifier Module Model: VV4 (Formerly V4i-D) Material: Copper Conversion Rate: 2V, us Bandwidth: 5MHz Current Input Bias: 23nA Voltage Input Offset: 490uV Current Power: 4mA Rated Voltage: + -4V to + -18V Operating Temperature: -40 to 85℃ Suitable: For Decoders, Music Players, Preamplifiers, Headphone Power Amplifiers, CDs, Etc.. Package List: 1 x Operational Amplifier Module