A Phono Preamp w/ RIAA EQ plus USB!
The USB Phono Plus features an RIAA-type phono preamp circuit housed in a rugged metal case with full patching facilities for connecting it to a phono turntable and mixer. The USB Phono Plus is essentially a DeeJayPre II with USB connectivity.
Phonograph records have three basic problems:
1. It is physically impossible to press them with ridges that end up allowing low frequencies to come out at the same reproduction level as mid and high frequencies. Bass compensation is therefore needed during playback.
2. Records produce a certain amount of hiss which is covered up in post-production by boosting the gain of the high frequencies before pressing. Counter-EQing during playback compensates for this.
3. Magnetic cartridges produce a weak signal, which must be boosted to match the rest of the amplification, and this too is done during playback. In the mid-1950s, the Recording Industry Association of America established compensation standards. The resulting RIAA preamp has been built into every hi-fi and stereo amplifier with phono or turntable inputs since then. A
separate RIAA preamp is necessary when you are connecting a turntable to a mixer that does not have one built in.
- a.) Connect the AC adapter to the 12V DC Power Input on the USB Phono Plus and plug the other end into a 120V AC power outlet
- b.) Connect the turntable leads to the Input connectors on the USB Phono Plus
- c.) If the turntable has a separate ground wire, attach it to the Ground terminal on the USB Phono Plus. This is to reduce hum
- d.) Connect the USB Phono Plus's RCA or 1/4" outputs to the appropriate inputs on your mixer
- e.) If the mixer does not have RCA inputs (on any of the channels) a stereo 1/4" male to dual mono 1/4" male "Y" cord will be needed. Connect the 1/4" Output on the USB Phono Plus to a pair of input channels on the mixer via their line inputs.
- Dual RCA-type inputs
- Dual RCA-type outputs
- Supports both MC & MM cartridges
- 1/4" stereo output (in case the mixer only has 1/4" inputs)
- Ground terminal
- Power: 12V DC (Adapter included)
- Dimensions: 3.75 x 2.875 x 1.75 inches (95mm x 73mm x 45mm)
- Weight: 1lb (454g)
