Marantz professonal PA01
¥ 150,000 (released in 2002)
Commentary
A professional monitor amplifier developed to drive small monitors for recording / editing studios and near field monitors for private recording systems.
The amplifier consists of an all-Non-NFB discrete amplifier, and realizes frequency characteristics extending up to the MHz band and overwhelming high-speed response.
NFB is a technology that cancels out the distortion by inverting the output of the amplifier and returning it to the input again. It is adopted in most audio amplifiers. In this method, static characteristics such as distortion and frequency characteristics can be improved as the amount of NFB is increased. However, dynamic characteristics are deteriorated by stabilizing a large amount of NFB. Even if an amplifier circuit or power supply is composed of high-speed elements, its ability cannot be demonstrated and it cannot follow music signals that change instantaneously.
In the PA series, not only the current amplifier stage but also the voltage amplifier stage are all Non-NFB configuration which completely eliminates NFB, so the linearity of input / output is greatly improved.
A fully balanced 400 VA R core transformer and 1,000 μ F / 63 μ F/63Vx20 electrolytic capacitors, and is a ± separate rectified high-speed power supply.
Equipped with various line input selectors and volume.
It can also be used as a monaural high-power amplifier with BTL connection by switching the front panel selector.
Can be mounted in standard 19-inch racks
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Model Rating
| Type | Stereo power amplifier |
| Rated output | 100W + 100W (8 Ω) 160W + 160W (4 Ω) 320W (BTL mono, 8 Ω) |
| Total harmonic distortion factor | 0.07% (Half Power Stereo, 8 ω, 20 hz to 20 khz) |
| Frequency characteristic | 5 Hz ~ 240 kHz + 0 -1dB |
| Output bandwidth | 10 Hz ~ 150 kHz (50W) |
| Signal-to-noise ratio | 115 dB (A-curve correction) |
| Input Sensitivity / Impedance | 0 dB (0.775 Vrms) / 10k Ω (unbalanced) 0 dB (0.775 Vrms) / 15k Ω (Balanced) |
| Maximum voltage gain | 31.4 dB (Volume max, 1 kHz) |
| Input switching | Line 1/2/3(unbalanced) XLR(balanced stereo)/XLR.mono(BTL) (Switch with Front Input Selector) |
| Indicator | Power |
| Protection circuit | DC detection, thermal, eddy current detection |
| Cooling system | Natural air cooling |
| Power supply voltage | 100 VAC, 50Hz/60Hz |
| Power consumption | 260W (Electrical Appliances and Materials Safety Act) |
| Maximum external dimensions | Width 435x Height 116x Depth 414 mm |
| Weight | 11.8kg |
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