Description The concept of adjustable phono equalization is not a new one. When digital signal processing was nothing but a distant futuristic dream recording engineers involved in re-issuing the early masterpieces had to set about the task of equalizing the apparent differences in tonal balance between older records and those of the post 1950's RIAA reproduction standard. The demand then for such a product was limited to say the least and therefore those engineers had to make their own adjustable equalization phono preamplifiers. One such engineer featured in a 1970's edition of Hi-Fi News & Record Review had made his own adjustable EQ phono preamp. It captured the imagination of Graham Slee and after 30 years of analog disc reproduction research he set about to capture the delights and freshness of what many consider to be dull or brittle sounding junk records. The resulting Jazz Club phono stage is an expansion of Graham Slee's advanced phono stage design - the Era Gold. The Jazz Club features custom manufactured gold contact "dry-signal" switches to operate directly the different EQ settings. Bring the stars of yesteryear back to life! The 15 restoration EQ pre-sets on the Jazz Club vinyl and 78 RPM restoration pre-amplifier make old, sound new! But it's not only for your old records, it's for your entire record collection. Enjoy master tape quality of your favorites and rediscover the delights of those records you'd committed to the bin! Gramophone magazines' Caroline Osborn confirmed the Jazz Club vinyl and 78 RPM restoration pre-amplifier properties in her March 2003 review. Smoother, more open, lower surface noise, better tonal depth, clarity and instrumental separation (even with mono records!). And to cap it all, it sounded better than the CD of the same session! The Jazz Club vinyl and 78 RPM restoration pre-amplifier is supplied with the PSU1 outboard power supply. The PSU1 is included in the price. Specification | Nominal Input sensitivity | 4 mV rms | | Maximum input | 45 mV rms | | Nominal output | 472 mV rms | | Maximum output | 5.3 V rms | | Gain | 41.5 dB (118) | | Input resistance | 47 kOhms | | Input capacitance | 100 pF | | Output will drive | 600 Ohms | | Noise | -68 dB CCIR q-pk 20Hz - 20kHz | | Distortion | 0.02% | | RIAA accuracy | 0.5 dB | | Frequency response | 5Hz - 150kHz | | Channel balance | 0.2 dB | | Channel separation | 64 dB |
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