![Harman Kardon HK TC300 sq old school amplifier. Unicorn collector very rare amp. Needs service (not TC600 TC400Q) for Sale in Anaheim, CA - OfferUp Harman Kardon HK TC300 sq old school amplifier. Unicorn collector very rare amp. Needs service (not TC600 TC400Q) for Sale in Anaheim, CA - OfferUp](https://images.offerup.com/q0OOSWC3DoG9ji4qL-yE9L6MXV4=/1501x918/91c4/91c4af2bf1d442b6a6ab5f324ae5688c.jpg)
Harman Kardon HK TC300 sq old school amplifier. Unicorn collector very rare amp. Needs service (not TC600 TC400Q) for Sale in Anaheim, CA - OfferUp
![Harman Kardon HK TC300 sq old school amplifier. Unicorn collector very rare amp. Needs service (not TC600 TC400Q) for Sale in Anaheim, CA - OfferUp Harman Kardon HK TC300 sq old school amplifier. Unicorn collector very rare amp. Needs service (not TC600 TC400Q) for Sale in Anaheim, CA - OfferUp](https://images.offerup.com/6nj2GSAhze9Xe-d8clcDCK8LMyU=/390x250/c8e1/c8e1daa011cd438cb3c3b5e7b553a8f9.jpg)
Harman Kardon HK TC300 sq old school amplifier. Unicorn collector very rare amp. Needs service (not TC600 TC400Q) for Sale in Anaheim, CA - OfferUp
![Harman Kardon HK TC300 sq old school amplifier. Unicorn collector very rare amp. Needs service (not TC600 TC400Q) for Sale in Anaheim, CA - OfferUp Harman Kardon HK TC300 sq old school amplifier. Unicorn collector very rare amp. Needs service (not TC600 TC400Q) for Sale in Anaheim, CA - OfferUp](https://images.offerup.com/EcIPdm42WguxUwlavCDqFQk2rHM=/1342x918/c100/c1000b1b67344e52b41ee39a42768bdc.jpg)
Harman Kardon HK TC300 sq old school amplifier. Unicorn collector very rare amp. Needs service (not TC600 TC400Q) for Sale in Anaheim, CA - OfferUp
![Harman Kardon HK TC300 sq old school amplifier. Unicorn collector very rare amp. Needs service (not TC600 TC400Q) for Sale in Anaheim, CA - OfferUp Harman Kardon HK TC300 sq old school amplifier. Unicorn collector very rare amp. Needs service (not TC600 TC400Q) for Sale in Anaheim, CA - OfferUp](https://images.offerup.com/I9Gl8PDkVJQwvd0a6KadUvoeitM=/366x250/0d43/0d43e522afd64f6a86074dae162110e9.jpg)