National Horizon 20 HiFi Amplifier Manual $8.99 National Horizon 20 HiFi Amplifier Manual quantity Add to cart Category: National Description Description For sale is reprint of National Horizon 20 HiFi Amplifier Manual. Manual is 8 pages Includes Part List and Circuit Diagram. Manual also includes 2 Service Bulletins Hi-Fi-8 and Hi-Fi-9 Related products National HFS Radio Receiver Manual $8.99 Add to cart National HRO-7 HRO7 Radio Receiver Manual Shortwave ham $10.49 Add to cart National NC-183 NC183 Radio Receiver Manual $11.99 Add to cart National NC-200 NC200 Radio Receiver Manual $9.99 Add to cart