PAC Peripheral/ LD10 Line Driver Signal Booster

Not the most clean looking or compact design, but was inexpensive and I had had good luck with PAC products in the past,I was redesigning a car audio system using stuff I already had, for the most part. So I had decided to use an older Alpine head unit. It had been replaced with a newer Kenwood at some point specifically for the usb and aux inputs, as well as a more powerful Class D internal amp. But I was not going to use the radio internal power, just external Amps. The Alpine had a superior CD section, and now there are inexpensive dongles to use the alpines lossless CD changer input, and it's I-pod inputs for aux in, and Blue tooth in.But I felt like I needed to overcome the relatively low 2volt pre-outs limits. So I bought 1 of the line driver/level balancers and wired the unit to test on a bench. With it sending I of its front full rang preouts To my Yamaha receiver( in my shop) all I can say is wow, and ordered another for my sub out as well. The blue tooth worked perfectly, and the sound was clean, loud, and with no induced noise from the PAC line driver. So if you know you will be using low level "convenience" devices like anyone' who gets in the cars phone, weather you like it or not, it's just how it is now, I promise, add a line driver(1) before the signal goes in to your head unit, or multiple out of your head unit(if you know it has low preamp out and you want to drive all your sources.

Got it all hooked up to run my old school Luxman stereo amp with bluetooth set up. easy play tunes from phone, laptop etc. I needed this to boost signal from bluetooth receiver to amp. Very happy with the set up

As advertised, but took almost 3 weeks to arrive...

I have successfully deployed this line amplifier in a non-automotive application.It seems to be working well.The audio output of this laptop is routed into the stereo receiver, to ultimately feed our FM stereo transmitter with our favorite online radio stations for listening throughout the house.I built a relay box to route this audio both into the receiver when the receiver is turned on, and directly into the transmitter when the receiver is off. For some unknown reason, there is an audio pad in the receiver for this input, thus creating an approximate 3dB drop into the transmitter when the receiver is on. I had previously used an old radio shack 9v mixer to try to boost the laptop audio into the receiver, but it appears to be an active attenuator, not an active mixer, thus no gain.This unit is actually a line amplifier.Because of some of the peripherals in the stereo receiver, I already have a rugged 12v DC power supply in the cabinet, thus supplying power to this unit is very easy; the red and black leads are for DC in.Out of the box, gain is set at full, and at this setting, there is some noise suggesting borderline oscillation. Fortunately, the signal was too hot into the receiver, so the trim controls are now set at about 40% to achieve unity into the FM transmitter. The signal is clean, and the level change between direct feed and receiver feed into the transmitter is imperceptible, at a much lower cost than similar line level amplifiers currently available.I may purchase one or two more to have around should I need to boost a line level signal 3 to 6dB, which is the best testimonial I can supply.

The line driver does a decent job of boosting the level of my mp3 player into my factory radio. No perceptible noise, a big plus for products in this price range. Switching to my player from the radio or CD results in much less of a volume change, my primary reason for getting this.As much as it boosts the signal, I would have liked there to be even more gain - I have the attenuators set at full, and I can't quite match the CD level without maxing out the headphone output of the MP3 player. It's more than workable, though, and a lot better than without it.My biggest complaint is the attenuator knobs. They are just little bitty trim pots with a big extension knob, but still recessed (so a screwdriver is required to turn them). However, the hole is too tight for a typical #2 philips-head (what they appear to match), so getting at them was troublesome. Furthermore, one of the knobs snapped off as I was trying to ensure they were turned all the way up. It was just too much knob on too little a device (the tiny trim pot).