The Luxman L-504 is an integrated amplifier that combines high-quality audio performance with classic Japanese design aesthetics. Introduced in the late 1970s, this model draws on Luxman's heritage of crafting reliable and finely tuned audio equipment. The L-504 features a robust build with a solid metal chassis and an elegant front panel adorned with analog VU meters, enhancing its vintage charm. It is driven by a powerful amplifier circuit that delivers a dynamic sound profile, aiming for clarity and warmth in music reproduction. The L-504 is equipped with multiple input options, including phono, line, and tape inputs, catering to a variety of source components. Additionally, it includes tone control features that allow users to adjust bass and treble settings to their preference. This amplifier is generally appreciated for its durability and the musicality it brings to audio playback, making it a sought-after unit among vintage audio enthusiasts.