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. We've continuously been impressed with Rega's excellent (and rather affordable) Fono MM range, so it was something of a relief that the latest model, which featured a brand-spanking new look, didn't sacrifice style for sound. That same Rega DNA is still in there throughout the latest Fono MM Mk5 phono stage. In numerous applications (audio, computing devices, aerospace amplifiers, communications, etc.) an exceptionally low-noise preamplifier stage becomes necessary, and just about any model strategy that could minimize noise by even 1 dB is welcomed with passion by everybody involved. R11 is = 6k8 Applying even the highly sensitive measuring devices at our fingertips we still could not determine virtually any output noise signal whatsoever! The physical limitations of vinyl mean that the original audio signal has to be altered before it can be recorded onto its tiny grooves – low frequencies are reduced in level and the highs are boosted. The curve that governs this equalisation standard was set by the RIAA (Record Industry Association of America) in 1954.

It is recommended that the voltage gain should be kept within the limits stated earlier. C2 rolls of the high frequency response of the amplifier, and is necessary as instability might otherwise occur. The upper -3dB response of the unit is still at about 200kHz even if the amplifier is used at a voltage gain of hundred times. When used as lower gains the upper -3dB point is pushed proportionately higher. The lower -3dB point is at approximately 20 Hertz incidentally. Another Transistorized Preamp design 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.Another oldie but still a goodie, the Gram Amp 2 holds its own nearly a decade after first coming on the scene. And you can see why - simplicity is the name of the game here, an approach that ages remarkably well. It's a moving-magnet phono stage with one set of inputs, one output, no bells or whistles. The circuit is self explanatory, and can be integrated with any standard power amp for further amplification. Guitar Preamplifier Provided you keep it away from other mains-powered products and power cables, this phono stage will prove suitably quiet and hum-free. Features are basic but it's clear that Moon has focused on the bit that counts – sound quality. Is the performance gap that huge between the two units? No – but the dedicated phono stage has a little more presence overall, a deeper soundstage, and was less noisy than the stage inside the integrated amplifier. 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

It's superb balance of attitude and refinement. If the rest of your system is up to scratch, the MX-VYNL is worth the investment. I am not a total audiophile who demands ultra-low noise and distortion, but I would be wishing for this buffer to be more-or-less ‘transparent’. The circuit diagram is for a preamplifier that can be employed with low impedance microphones, and should give an output signal of around 500mV. R.M.S.

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. The unweighted noise performance of this circuit is not quite as good as that of the previous circuit, but is still about -60dB referred to 500mV R.M.S. Detail is great, too, uncovering new layers of musicality and texture as it goes, especially with regard to vocals. From Beethoven to Bruce Springsteen, the Rega Fono MM is completely at home. Rather than use a series of dipswitches (as many rivals do), the MX-VYNL has a rather elegant control dial to manage the switch between moving coil and moving magnet inputs and their different loading requirements.