BUY FROM A TRUSTED SELLER! WHY BUY FROM ME? i have been selling on ebay over 22 years with an average of 400 transactions a year. i always take care of my customers before and after the sale. most sellers do not even want to talk to buyers after the sale but i am here for information,guidance with my 34 years in the car audio industry, and my integrity. i will always do anything to make the sale go smoothly and if anything ever happens(which is usually doesnt), i will take care of everything! just communicate with me through ebay. if you have any questions before buying, please feel free to ask them by phone or ebay messaging. PICTURES OF WORK DONE TO AMP BELOW!this auction is for a refurbished, nakamichi pa-506 6 channel amp with built-in crossovers and it was designed by zed audio. this amp was refurbished with high end components from a person in japan who i have dealt with in the past. he is very good at his work. the pictures below shows it.the amp works and sounds great. this amp will run a whole system with clean power. it has a lot of adjustments to make it sound great.the pictures show the condition and i brighten some photos to show all flaws.From the catalog ~?While adhering to Nakamichis unchanging sound policy, Nakamichi USA has achieved high-quality sound and punchy American taste sound by developing and manufacturing. The amplifier circuit is equipped with an original harmonic time alignment circuit that has a proven track record in high-end home audio. It achieves both the natural, fresh, transparent mid-high range of a tube amplifier and the low-range reproduction that allows you to enjoy the volume and power of a transistor amplifier. In addition, it is packed with innovative technology such as a dynamic bass processor that allows you to adjust the low-frequency characteristics to your liking. We will deliver unlimited satisfaction to everyone who loves music! ![Main specifications]?Rated output: 50W x 6 (4?) / 100W x 6 (2?)?Frequency characteristics: 5Hz - 50KHz (+0dB, 1dB)?Input sensitivity: 200mV - 7.5V?Harmonic distortion rate: 0.01%?S/N ratio: 100dB?Built-in low-pass and high-pass filters?Dynamic bass processor?Current consumption: 51A?Dimensions: 480×66×244mm?Weight 9.1kg this is what he did:All parts cleaned.replace and refresh the main capacitors that are completely solderedmain capacitor has been replaced with KW for audio.the input capacitor, which is an important point for sound quality,high-performance Fine Goldsound quality tune for clearer sound! !board cleaned and tested. everything works great and sounds cleaner! Nakamichi PA-5066 x 50W @ 4 ohms6 x 100W @ 2 ohms3 x 200W @ 4 ohms bridged1 x 250W @ 2 ohms bridged (ch 5/6 only)THD: <0.01%S/N Ratio: 100dBPower Bandwidth: 10Hz ? 30kHz (-1dB)Dimensions: 18.9 x 9.6 x 2.6 (48.1cm x 24.4cm x 6.7cm)Built by Zed Audio alaska and hawaii will cost more to ship so please message me before you buy. i guarantee everything i sell to work or your money back! i want your positive feedback so let me know what i can do to help you out with this purchase and i will fix any problem there is. please contact me first before leaving negative feedback so i can work anything out that you are not happy with. i am a very understanding seller! thanks