XR-A901 Tone Board Preamp Versatile compatibility Designed to integrate smoothly with a wide range of amplifier boards, enabling upgrades and improved performance in both private home systems and professional audio setups. Enhanced audio control Offers precise tone shaping with dedicated adjustments for treble, bass, and master volume to fine-tune your audio output. Key benefits - Function: preamplification and tone shaping in a compact module that fits into existing signal chains. - Compatibility: supports multiple amplifier boards for flexible system design. - Performance: enables clear control over high and low frequencies for more accurate sound reproduction. Use scenarios - Home audio: tailor treble, bass, and volume for streaming, vinyl, or gaming to match room acoustics and personal preference. - Small studio or live rack: dial in monitor or PA output with on-device EQ and level control for clearer performances. - DIY projects: integrate into custom amplifier builds or educational setups to explore tone shaping with a modular preamp. Note: Maintains the XR-A901 Tone Board Preamp brand and its core functions for consistent sound adjustment and system compatibility.