The Pyle Pro PP555 Ultra-Compact Phono Turntable Pre-Amplifier brings your studio equipment's phono-level output to a more suitable line-level output. This compact electronic preamp features a 9V battery compartment, dedicated RCA and 1/4” output connectors, a DC adapter, and more.
I've read that powering the unit with a battery reduces line noise. Will this unit also charge a battery while not in use?
Asked by: Anonymous
I do not think it will charge the battery. I use mine without the battery most of the time. I have not had any problems with line noise with it properly grounded. I grounded it to the grounding screw on the back of my surround sound receiver
Answered by: mark b.
Date published: 2018-08-25
Specifications for these Pyle phono preamp products don't make much sense: Output 2 Vpp maximum at 10 k?? Typical line inputs that this plugs into are 20k? to 50k?, and output voltage is actually more commonly stated in Vrms (2 Vpp = 1.414 Vrms). S/N ratio 70 dB? Is that unweighted or is it A, B, or C weighted? That's like saying My coffee cup holds 3. Input Sensitivity 3 mV at 50 k? (phono)? For what output level? 2 Vpp maximum at 10 k?, or what? Is 50 k? the input impedance (where the turntable plugs into it)?What is the overall gain? Not stated. From the previous input sensitivity spec, I calculated it as about 53.5dB, which is usually enough to amplify low-output moving-coil cartridges. If true, this could be the greatest audio equipment bargain in history! That's a bit hard to believe. What is the nominal input capacitance? Not stated. This is an important factor in any magnetic cartridge's high-frequency response.I get the feeling these numbers are meant to make this product look OK rather than inform buyers of its actual capabilities. Could you maybe prompt the manufacturer for more meaningful information? Maybe do the same for other products with questionable specs and descriptions? I guess that's what happens when information passes from the engineering department to the marketing department!
Asked by: Anonymous
As a mechanical guy, I can't tell you what the overall gain is, but mine requires turning the receiver volume above normal to hear a record and in clear passages the is a lot of hiss. Not happy with it.