NSEQ-4
Discrete Solid State Two Channel Parametric EQ
Overview
Delivery 6-7 workingdays
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 (Dove Topology)
- 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
- Lovingly hand-crafted in Northern California
| “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 |
| + 28 dBu | |
| Maximum Input Level (EQ Full Boost) | + 17 dBu |
+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 |
| +20 dB (+10 dB with range switch in) | |
| Maximum Cut (21 Step Detented) | -20 dB (-10 dB with range switch in) |
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 |
