I am the original owner of this receiver. It is just over four years old having purchased it in December 2019 from Best Buy. It is in excellent condition cosmetically and functionally. See the pics for its condition. It comes with all original accessories (see pics for everything included) and I will ship in its original box and packing materials. I replaced it in August 2023 so it’s been on a shelf for the past six months.From professional reviewers:“The new SC-LX904 does cover the first feature that consumers are looking for, power.  The Direct Energy HD Amp has now reached the 6th generation and contains new power coils as well as new custom film capacitors co-developed with Shinyei Capacitor for which Pioneer believes will deliver the ultimate sound. The power supply and patterning has been developed through repeated tuning. Also, the entire transmission path from the pre stage to the power stage has been changed to balanced circuitry, to transmit near noise-free high-quality signals to the power stage. The receiver boasts a Class D3 (Direct Energy HD) amplifier with 140 W x 11ch (8 ohms, 1 kHz, THD 0.08 %, 2ch Driven FTC). No hidden figures or inflated power specs here!Along with a slew of input options and all the video codecs you need for 4K upmixing, the receiver comes with two ES9026PRO DACs, and features full band phase control which should help bring out the best sound from the 3D surround sounds of IMAX Enhanced, Dolby Atmos, and DTS:X. Like other Pioneer receivers the SC-LX904 will come with PQLS which uses HDMI-CEC to correct jitter in HDMI audio when used with a Pioneer DVD player. The new Audio Exclusive Mode and AV Direct Mode let you enjoy detailed sound by turning off the unused functions that affect quality sound reproduction.Dolby Atmos/Dolby Surround UpmixingThe SC-LX904 is compatible with 7.2.4ch/7.2.2ch/5.2.4ch configuration of Dolby Atmos. With overhead top speakers you can reproduce object-oriented three dimensional sound. Other audio codecs such as PCM and DSD can be upmixed using Dolby Surround for enjoying 3D surround sound.DTS:X/DTS Neural:X UpmixingDTS:X is the next-generation audio codec from DTS that leverages object-based audio to enable new immersive and interactive audio experiences. Since DTS:X can automatically adapt the audio to the existing channels and speaker system, no specific speaker layout is required. Like Atmos, other audio codecs such as PCM and DSD can be upmixed using DTS Neural:X for enjoying 3D surround sound.”