Pro-Ject Phono Box MM, Phono preamplifier with metal case and special low-noise ICs

Product Information

Entry-level products like the Schiit Audio Mani 2, Cambridge Audio Alva Duo, and U-Turn Audio Pluto did their best to not rob music of its pace and keep the sound relatively balanced. The Pre Box RS2 Digital is a DAC and preamplifier that uses a dual-mono configuration of the highest-class D/A converters from ESS Sabre. ESS9038Q2M chips provide the highest sound quality in price-affordable, high-end circuits. Unlike most of DAC´s in this price range, the Pre Box RS2 Digital includes dual DACs and separate signal paths for the left and right channels. Also thanks to these converters, the Pro Box RS2 Digital supports up to 32-bit / 768 kHz files in PCM and DSD formats (up to DSD512) via USB, covering any digital file you can buy or stream. The Phono Signature on its own sounds refined and smooth with plenty of bite when required, but adding the updated PSX-R2 power supply takes sound quality to another plane altogether. The scale is even bigger, bass gains more authority, and the precise positions of the performers and instruments in the beautifully layered sound stage are laid bare. The insightful delivery squeezes the very last drop of emotion from a recording.

If you’ve already got a suitably talented turntable and really want to hear how good it is, this Cyrus combination is a must-buy. Here are a couple of more preamplifier circuits that may interest you. 6) Low Z (impedance) MIC Preamplifier Circuit Any music as we know is in the form of a consistently varying frequency, therefore when such a varying input is applied across the indicated C1 end terminals, the same is delivered across the base T1 and ground.If Freddie’s trumpet playing doesn’t have a palpable feel to it, you’re only getting part of the experience. The Croft excels at that in the right system. 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 The Pre Box RS2 Digital is the bigger brother of our award winning and ground breaking Pre Box S2 Digital. It uses the same excellent sounding DAC chips as the S2 version, proving once again that the Pre Box S2 Digital was already at the very top of high-end DACs and absolutely beyond its competition. Based on the same core-design principles, the feature set is extended and driven to new heights. The result is a fantastic sounding and very versatile box. The perfect partner for the cream of the crop of high-end amplifiers and speakers alike! The circuit is self explanatory, and can be integrated with any standard power amp for further amplification. Guitar Preamplifier

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 demonstrated below provides a fundamental design concept, although not quite ideal, the final results to date are encouraging. 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. 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. 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.

Debut PRO S

The inputs and outputs of the Phono Box are gold plated stereo RCAs, to ensure a solid connection between the components as well as the musical signal. The Phono Box MM/MC is compact in size, allowing it to sit anywhere in your system easily. The matching amplifier introduced in this article answers these difficulties: it features a high- impedance (1M) input that will stand up to voltages of over 200 V. The output impedance is fairly small. Amplication is X2 (6 dB). This simple circuit enables boosting extremely small or minimal frequencies to an appreciably bigger outputs which can be then used for feeding lager amplifiers.