Broad compatibility - Supports standard dual op-amps for upgrade or replacement, including LM833, LM4562, 4558, 5532, 4556, LF353, OP275, AD712, AD827, AD746, AD797, OPA2604, OPA627 Dual, OPA637 Dual, AD7 Dual, AD7 Dual, AD7 Dual, AD79797 Dual AD8 43 Appearance and build - Gold-plated pins adapter board - OPA627AU SMD single operation amplifier exquisite adapter board with fully gold plated pins Sound and performance - Warm sound with a well-defined sound field - Sound quality is delicate, soft and graceful, with high and strong taste Usage and compatibility - OPA627 operational amplifier uses the field effect input mode - Suitable for front and rear amplifiers, output buffer, voltage amplifier, headphone amplifier, etc Use scenarios - Upgrade a front-end or rear amplifier to improve detail and drive - Use as an output buffer to enhance stability and headroom in a hi-fi or headphone circuit - Implement as a voltage amplifier or headphone amplifier stage in audio gear