National Horizon 10 HiFi Amplifier Manual Sorry, this product cannot be purchased. $8.99 Categories: N, National Description Description For sale is reprint of National Horizon 10 HiFi Amplifier Manual. Manual is 8 pages Includes Part List and Circuit Diagram. Manual also includes 3 Service Bulletins Hi-Fi-7, Hi-Fi-8 and Hi-Fi-9. Related products National NC-108 NC108 Receiver Manual $7.49 Read more National NC-44 NC44 Radio Receiver Manual $5.99 Read more National NC-44 NC44 Radio Receiver Manual $5.99 Read more National Company the 600-Watt Transmitter HAM Manual $9.99 Read more