NAD Monitor Series 1300 preamplifier Specifications

Sidebar 3: Specifications

Description: Solid-state preamplifier with three line-level inputs, one phono input (MC or MM), headphone output, two tape loops, one external processor loop, and bass and treble controls. Specifications: RIAA error (phono): ±0.3dB. Frequency response (line-level): –0.3dB points at 20Hz and 20kHz. Input impedance: 47k ohms in parallel with 100/200/320pF (MM phono), 100 ohms in parallel with 1000pF (MC phono), 100k ohms in parallel with 220pF (line). Output impedance: 150 ohms (Normal, High), 1000 ohms (Tape/EPL). Maximum output level: 12V RMS (Normal), 12V RMS into 600 ohms (High). Sensitivity (phono): 1.3mV RMS input for 0.5V output (MM), 60uV RMS input for 0.5V output (MC). Sensitivity (line): 80mV RMS input for 0.5V output. Phono input S/N ratio (IHF A-weighted, with cartridge connected): 80dB ref. 5mV (MM), 78dB ref. 0.5mV (MC). Line input S/N ratio (A-weighted): greater than 100dB ref. 0.5V out.
Dimensions: 17" W by 10" D by 3" H. Weight: 9.5 lb.
Price: $398 (1988); no longer available (2018). Approximate number of dealers: 300.
Manufacturer: NAD (USA) Inc., Norwood, MA 02062 (1988). NAD Electronics International, 633 Granite Court, Pickering, Ontario L1W 3K1, Canada. Tel: (905) 831-6555. Fax: (905) 831-6936. Web:

NAD Electronics International
633 Granite Court
Pickering, Ontario L1W 3K1
(905) 831-6555

Ortofan's picture

... generally a fine design.

NwAvGuy has shown that the performance of the JRC op-amps is essentially blameless.

However, depending upon which functions are in use, there may be about a dozen electrolytic capacitors in the signal path.
These should be either replaced or bypassed with film type capacitors per the Jung/Marsh "Picking capacitors" articles.

Likewise, the op-amps would benefit from having larger value local bypass capacitors added in parallel with the smaller value ceramic disc capacitors already in place.