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RA-Q4-500
Radial Engineering Q4 State-variable EQ 500 Series Module
The Radial Q4 is a unique equalizer that combines the warmth and detail of a pure class-A circuit with the character of true 100% discrete state-variable filters. In other words, no integrated circuits are employed whatsoever. Each full size through-hole part is carefully inserted by hand and then wave soldered to ensure optimal signal flow. This produces a level of sonic warmth and musicality that excels above the others.
Type: 500 Series
Radial Q4 PRODUCT FEATURES:
- Four band semi-parametric equalizer
- 100% discrete class-A state-variable filters
- Sounds exceptionally warm and natural
- Fits all standard 500 series power racks
Radial Q4 TECHNICAL SPECIFICATIONS:
Unlike most EQs that employ high-gain, low-noise chips to convey a sense of clinical accuracy, the Radial Q4 is all about adding analog character to the signal path. This is achieved using 100% discrete parts throughout to produce the unique class-A circuit architecture. With this approach, you will encounter a slightly higher noise floor, a little bit more distortion and of course, overdriving the Q4 will occur more rapidly as you push it beyond it's intended working range. But these are the very characteristics that one looks for when recording with vintage audio devices. Yet even with this in mind, the Radial Q4 still manages to deliver less than 0.01% distortion and better than 90dB signal-to-noise. This is truly impressive given the nature of this unique EQ design.| Specifications | |
|---|---|
| Specifications are subject to change without notice. | |
| Circuit type: | Discrete state variable class-A |
| Frequency response: | 20Hz ~ 20kHz |
| THD+N: | 0.03% @ +4dB |
| Maximum input level: | +21dBu |
| Maximum output level: | +18dBu |
| Gain: | +/-12dB for each band |
| Dynamic range: | >95dB |
| Equivalent input noise: | -95dBu |
| Common mode rejection ratio: | >64dB @ 55Hz |
| Intermodulation distortion: | 0.07% |
| Input impedance: | 20K Ohms |
| Output impedance: | 150 Ohms |
| Features | |
| Controls: | Hi & low frequency shelving |
| Hi mid & low mid semi parametric EQ | |
| Switches: | Wide & Narrow Q |
| EQ bypass | |
| Omniport: | Configured as TRS in out connection |
| General | |
| Power requirement: | 80mA |
| Compliance: | Yes - with API 500 series VPR aliance* |
| Yes - with Radial WHOS-Doc specification | |
| Size: | Standard 500 series rack format |
| Weight: | 1.5 lbs. (0.7 kg) |
| Shipping Size (L x W x H) : | 9" x 6.5" x 2" |
| Shipping Weight: | TBA |
| Conditions: | For use in dry locations only between 5°C and 40°C |
| Warranty: | Radial 3-year, transferable |
*Radial is not a member of the VPR Aliance