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

Product Information

Is Pro-Ject’s Tube Box S2 the best preamp out there for the money? I can’t say for sure. I haven’t heard all of the competition, or frankly any of it! I’m new at this. However, considering that this is the first preamp comparison I have done in my system that I know and love I thought the Tube Box S2 performed well. Certainly if you’re an analog “newbie” and looking for your first phono preamp, both the price and sound are right. Watch for more content to come from me in the future!

Cambridge Audio AXA 35, Cambridge Audio Edge A, Croft Phono Integrated, NAD C 316BEE, Naim Uniti Atom This is where the phono stage (or phono preamp) comes in. It has two jobs. Firstly, it has the reverse response built into it – one that boosts bass and flattens treble to exactly the right degree, which should result in a tonally even presentation for the audio signal. Dual tone control, presence control and volume control are offered. The circuit is designed for input levels of up to 3 V. Over this level distortion rises, but that may be, naturally, a decent outcome having guitar music. 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?As much as wiring is concerned, that may be not an issue, however matching the high impedance of the guitar component with the low impedance of the line input of the mixing panel does becomes an issue. The circuit demonstrated below provides a fundamental design concept, although not quite ideal, the final results to date are encouraging.

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. 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.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. 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. Cantaloupe Island: An ARP Odyssey synth without any reverb or effects was the first instrument through the speakers. Cleaner, more defined—and dare I say with deeper bass—and texture that somehow seemed to make my subwoofer better get along with my speakers and room.