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NX03 Class "A"
RPX-38 DualMono
RP-030 QuadMono
RP8K-VT
Technology IC and bipolar transistor All discrete. FET and Bipolar Transistor All discrete. FET and Bipolar Transistor Hybrid 4 x DoubleTubes (16 triode sections)
and biploar Transistors
Class of working always class A High Current always class A High Current
Power Supply capacitance multiplier
+ RC filter PSU
1 power conditioner
2 capacitance multiplier
2 RC filters PSU
2 power conditioners
2 capacitance multiplier PSU
2 RC filter PSU
Transfrormer plus double capacitance
multiplier PSU and 2 RC filter 
Maximum Output swing (Vpp) 15.00 Vpp 15.95 Vpp 33.00 Vpp 19 Vpp
Bandwith at +/- < 0.05 dB 0 Hz (DC) to 100 Khz 10 Hz to 100 Khz 2 Hz to 120 KHz 2 Hz to 100 Khz
THD at (3Vpp~1Vrms, 1 KHz, 32 Ω) 0,003% 0.015% 0,010% 0,10% 
Output impedance (on headphone jack) 1 Ω up to >100Ω 1 Ω up to > 1000 Ω 1 Ω up to > 1000 Ω 16 ohm to infinite
Input impedance 22kΩ - 47kΩ 22kΩ - 47kΩ 22kΩ - 47kΩ 22khm-47Khm
Slew Rate 0.09uSec 0.09 V/uSec 0,20V/uSec 0,11V/uSec
Max Gain 10dB 12 dB 10 dB 12 dB
S/N weighted "A" at 20Cent. After 30' -113 dB -118 dB -125 dB -120 dB
Construction material Polished stainless steel, avional Black painted stainles steel, avional All avional Unibody, single block of avional engraved
Size: Large, Deep, High (mm) 250 - 250 - 50 340 - 252 - 60 450 - 330 - 140 300 - 240 -110
Weight (Kg) 3.2 5.0 12.0  8.0
Operating voltage 100 to 240
must be specified on order
90 to 260
universal autodetecting
90 to 260
universal autodetecting
100 to 240
must be specified on order
Consumption A 45 VA 80 VA 95 VA 85 VA
In line from 2005 2013 2004 2015
N° of Input 1 pair RCA 1 pair RCA 1 pair RCA + 1 pair XLR 1 pair RCA 
N° of Output (line signal) 1 pair RCA 1 pair RCA 1 pair RCA + 1 pair XLR 1 pair RCA
Preamplified Output ND 1 pair RCA NA
N° of headphone output (Jack 6.5 mm) 2
(can be used at same time)
2
(can be used at same time)
2 x SE (Jack) 1 x Balanced (can be used at same time) 1
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