Please suggest me a good quality stereo audio small signal preamplifier circuit which can work from 5 or 6 volts single supply, that would not load the set top box, preferably using good low noise op-amp with detailed circuit and parts label.

Sound quality is first-rate: fantastically detailed, with the upper register particularly impressive. It’s difficult to imagine a more detailed presentation from a phono stage for the money. There are rivals with an equally wide soundstage, but they perhaps don’t shine the spotlight so intensely on each instrumental strand. Detail is where it stands out, but the Gram Amp 2 is also a dab hand at dynamics and timing – although perhaps not with as much bite and punch compared with the Rega.On a car stereo head, which has 4 (line-level) outputs for an amp (FL, FR, RL, RR), I am trying to get another stereo pair, to go into another stereo amp for a third pair of speakers. I am concerned that if I simply take one of the stereo pairs and use passive Y-connectors to get the new pair, each will be quieter, because the power would be shared across two. Sound quality is seriously talented and it comes bursting with texture and insight. It's a wonderfully clean and crisp sound, with more low-end weight and substance sitting alongside Cyrus’s traditional values of precision and speed. And – is there a way to measure the output of the car stereo line outs? AC millivolts? So when I make this buffer amp, I’ve got a way to comparatively measure that it’s got a similar output? These usually provide an output signal level of about 0.2mV. R.M.S., which is about one tenth of that generated by a high impedance microphone.

So, my experience with this phono stage has been a pretty good one. Albeit subtle, it sounds fantastic and was a step up (no pun intended) from the solid state phono preamp built into my Denon receiver.A growing number of turntables, including many of the best budget turntables like the versatile Sony PS-HX500, come with built-in phono stages but others, like the similarly excellent Rega Planar 1, do not. If your turntable doesn’t have a built-in phono stage, you’ll need to connect it to a dedicated phono input input on your amp. If you were to plug your turntable directly into the same place, skipping the phono stage, any sound produced would be very reedy, very thin and stupidly quiet. The prototype was found to work well with both 200 ohm and 600 ohm impedance dynamic microphones, but it should also work well with electret types which have a built-in FET buffer amplifier, but no step-up transformer. The circuit is self explanatory, and can be integrated with any standard power amp for further amplification. Guitar Preamplifier

It might be likely to attach the guitar to the (high-impedance) mic input, however that is commonly way too sensitive for the function, which leads to clipping of the guitar signal too easily. Applying even the highly sensitive measuring devices at our fingertips we still could not determine virtually any output noise signal whatsoever!

Technical Specifications

When you cut the built-in phono stage out of the loop, and replace it with something better, your vinyl will begin to reveal its true potential. A dedicated phono stage is easy to install: it sits in the signal chain between the turntable and any line-level input on your amp. A word of caution: Don’t take the output from your phono preamp and connect it to the phono stage on an amplifier, as that will double amplify the signal, resulting in catastrophic distortion (which isn’t as good as it sounds). Yes, there is also this possibility. You can buy a turntable with an integrated preamp. However, this decision only makes sense in a few cases. For example, if you only want to listen to a record occasionally or digitize old records, a turntable with a preamplifier can be a good idea. After all, this can then be easily connected to an amplifier and used directly, this also applies to the PC or the sound card. If you want to listen to a turntable for music and also the appropriate quality, then a turntable without an integrated preamplifier is the better choice. In this way, you have significantly more control over the individual components of your system and can easily retrofit or replace as required. Information About The Test And The Product Recommendations

As Herbie’s Fender Rhodes e-piano entered, the wider soundstage kind of tossed the piano around the room as it oscillated between both channels. As Herbie’s ARP PE-IV String Ensemble faded in, the value having a slight increase in depth became clear: the sound was larger and a little more expansive. One downside: the S2’s improved detail retrievel revealed the audible distortion produced by the Debut Carbon’s rather short 8.6” tonearm. Phono preamps come in all shapes and sizes – consumers have never had as much choice as they do in 2022 regardless of budget and the availability of so many great options will only help keep new users in the fold.Vertere already had a great phono stage on its hands, but this updated version manages to deliver significant performance gains, thanks to some careful housekeeping and honing of the circuit board and power supply. The tidy little box remains the same; an orange power LED is the only addition to the design.