National Horizon 10 HiFi Amplifier Manual $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 HRO-50-1 HRO50-1 Radio Receiver Manual $12.99 Read more National Company the 600-Watt Transmitter HAM Manual $9.99 Read more NATIONAL Model HRO-5A1 Radio Receiver manual $10.49 Read more National NC-173 NC173 Radio Receiver Manual $10.49 Read more