The LD Systems PPA 2 is a very compact analogue phono preamplifier, which equalises the extremely low output signal of conventional turntables to RIAA standards. It allows you to connect to devices without any phono input, such as mixers, PA power amplifiers or sound cards.
The phono inputs are designed as RCA jacks, just like the line outputs; the PPA 2 also has a screw terminal for the ground conductor of the turntable and a 6.3 mm stereo jack for connecting a headset. The THD factor of the preamplifier is below 0.05% and the channel separation is -75 dB.
The LD Systems PPA 2 uses a 12 V AC adapter; a bright LED indicates the power supply on the top of the sturdy metal chassis.
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| Product type | Other Studio and Recording Equipment |
| Version | Stereo Input / Stereo Output |
| Frequency response | RIAA Curve Hz |
| Signal-to-noise ratio | 70 dB |
| Total Harmonic Distortion (THD) | <0.05% |
| Crosstalk | -75 dB |
| Max. input level | -23.5 dBV |
| Max Output Level | +10 dBV |
| Input impedance (kOhms) | 47 kOhm |
| Output impedance | 50 Ohm(s) |
| Indicators | power LED |
| Inputs | 1 x Phono Stereo |
| Input connectors | 2 x RCA, Earth terminal |
| Line outputs | Headphones, Line Stereo |
| Line output connectors | 2 x RCA, 6.3 mm TRS |
| Operating voltage | External Power Supply |
| Operating voltage | 12 V DC |
| Max. Current | 0.15 |
| Width | 104 mm |
| Height | 36 mm |
| Depth | 67 mm |
| Weight | 0,28 kg |