Full Timbral Control, Total Signal Integrity
World’s first (and only) all-discrete, true differential Class-A input buffer/amplifier.
Selectable balanced or unbalanced input.
Greatly improved 3rd generation FSA-03 all-discrete EQ amplifier
Improved output stage
True hard-wire bypass when EQ not selected
Upgraded power supply
Fully parametric stereo EQ with unprecedented sonic purity and integrity
All discrete J-FET solid state signal path
Minimalist design: only one active stage in the audio path
Identical EQ stage used in Library of Congress archiving path
Four EQ bands: 20 Hz to 20 kHz center frequency, 0.4 to 4.0 Q
Extremely low noise: -106 dBu
Constructed for demanding professional applications
Ultra-Premium components throughout
Gold relays, connectors, switches,
Silver Teflon power wiring, Mogami Neglex OFC audio wiring
Options
- Detented, loggable controls
- Differentially balanced inputs
- NSEQ-2 can be converted to an NSEQ-4
Specifications
| “Q” Range |
Q = 0.4 to 4.0 Adjustable on middle ranges |
| |
Q = 1.0 Fixed on low & high ranges |
| Maximum Output Level |
> + 28 dBu |
| Maximum Input Level (EQ Flat) |
+ 28 dBu |
| Maximum Input Level (EQ Full Boost) |
+ 17 dBu |
| Frequency Response |
|
+0 / -3 dB
|
sub 2 Hz to beyond 300 kHz |
| Frequency Response, Stereo Deviation |
+/- 0.5 dB (with Mastering Option) |
| Noise (All EQ Stages In, Controls Flat) |
-106 dBu |
| Maximum Boost (21 Step Detented) |
+20 dB (+10 dB with range switch in) |
| Maximum Cut (21 Step Detented) |
-20 dB (-10 dB with range switch in) |
| EQ Frequencies |
|
Low Range Switch (Centers – Peak/Shelf Selectable):
|
20, 34, 56, 100, 180, 270 |
Low Mid Sweep:
|
20 Hz – 220 Hz or 200 Hz – 2.2 kHz.
10X Range switch selectable. |
Hi Mid Sweep:
|
250 Hz – 2.5 kHz or 2.5 kHz – 25 kHz.
10X Range switch selectable. |
| High Range Switch (Centers – Peak/Shelf Selectable) |
4.8 k, 5.8 k, 8.0 k, 10 k, 16 k, 21 k |
| THD + Noise |
|
20 Hz – 30 kHz, All EQ Bands Switched In
|
< .009%, typ < .003 % |
| Common Mode Rejection Ratio |
|
10 Hz – 20 KHz, 100 mV C.M.
|
> 60 dB, Typ > 80 dB |
| Slew Rate, +27 dBu Out |
> 50 volts per microsecond |
| Main Hard-wire Bypass Switch For Each Channel? |
Yes |
| Peak/Shelf Selection On High & Low Range? |
Yes |
| Hard-wire Bypass Switching On Individual EQ Bands? |
Yes |
| Input Impedance |
25 kilohms |
| Minimum Output Load Impedance |
50 ohms |
| Recommended Load |
> 500 ohms |
| Output Impedance |
5 ohms |
| EQ Amplifiers |
Pure Class-A Discrete J-FETs |
|
