Nagra hd reference phono

Posted November 6, 2023

TECHNICAL SPECIFICATIONS ELECTRONICS

Transformers ratio: 26 dB
Tube stage gain:
30.5 dB
36.5 dB
42.5 dB
Maximum gain:

Transformers ratio and tube stage gain
68.5 dB with gain switch @ +6 dB
Output impedance: < 500 Ω Frequency response: 10 Hz – 100 kHz +1.5 dB / – 2 dB Signal to noise ratio: 80 dB ASA A Dynamic range: > 150 dB
Output level: 1 VRMS for 0 dB
Harmonic levels: < 0.1 % @ 1 kHz, 1 V out, no load Crosstalk: > 80 dB @ 1 kHz, 1 V RMS
Filtering:

De-emphasis curves selectable with the FILTERING controller & display: RIAA, TELDEC, NAB 100μS, VICTOR EUR, VICTOR USA
Input setting – MC1 & MC2:

RCA
Cartridge mode: STEREO IN / MONO IN
Load: NO LOAD / 5 / 10 / 15 / 25 / 30 / 35 / 40 / 50 / 55 / 60 / 65 / 75 / 80 / 85 / 90 / 100 / 105 / 110 / 115 / 125 / 130 / 135 / 140 / 150 / 155 / 160 / 165 / 175 / 180 / 185 / 190 / 200 / 205 / 210 / 215 / 225 / 230 / 235 / 240 / 250 / 255 / 260 / 265 / 275 / 280 / 285 / 290 / 300 / 305 / 310 / 315 / 325 / 330 /335 / 340 / 350 / 355 / 360 / 365 / 375 / 380 / 385 / 390 (Ω)
Input setting – MM:

RCA
Cartridge mode: STEREO IN / MONO IN
C load: 0 pF / 47 pF / 100 pF / 150 pF / 220 pF
Input setting – OPTION: Cartridge mode: STEREO IN / MONO IN

GENERAL
Vacuum tubes:

2x E88CC/6922
4x EF806S-Gold

Measured and selected by Nagra Lab
Remote automation:
Input

Output

1x 3.5 mm (1/8”) stereo Jack socket

4x 3.5 mm (1/8”) stereo Jack socket

Input command

Output switching by relay

Home automation:

1x SUB-D9 connector

RS232
115200 bits/s, 8 data bits,

no parity, 1 stop bit

Mains power:

C14 IEC Appliance inlet
100 V~, 115 V~, 120 V~, 127 V~, 230 V~

or 240 V~

NOT ADJUSTABLE
For cable with C13 IEC plug
±10%, 50-60 Hz

Power consumption: 170 W max
Mains fuse:
230V~ to 240V~

100V~ to 127V~

T 2A L

T 3.15A L

FST 5×20 mm 250 V

Operating temperature:

+15°C to +35°C
+59°F to +95°F

Moderate climate

Operating environment: Indoor only IP30
Dimensions with VFP: LxWxH
Power supply chassis (HD PSU)

Audio device chassis

Audio device chassis with option modules

installed on the back panel

439 x 438 x 121-130 mm

495 x 438 x 121-130 mm

17.3 x 17.3 x 4.8-5.1 in

19.5 x 17.3 x 4.8-5.1 in

Weight with VFP (net):
Power supply chassis (HD PSU)

Audio device chassis without option modules

16.5 kg

14.5 kg

36.4 lb

32 lb