Acoustical Systems Aquilar Anniversary Tonearm, and their Palladian cartridge are exceptional pieces of audio equipment. Beautifully engineered, when mated they present state-of-the-art analog performance, allowing the listener to simply sink into the music. For quite a while now, my good friend, philosophical colleague, and fellow reviewer Jules Coleman and I have been having an ongoing conversation about what we have dubbed, perhaps somewhat pretentiously, but certainly tendentiously, the philosophy of audio.