Brand new in factory sealed box! One Audio Research SP17L pure Class-A preamplifier from the German Audio Research distributor. It is the original 230 volts version with metal top cover. The front and handles are black colored. Serial number is 59104103. Retail price is 3.895 euro, now for 2.749 euro only. The SP17L is exactly the same as the SP17, only without phono input. The SP17L features low-noise JFET inputs and instead of 12AX7s you will find a 6H30 in each section. The same high-voltage regulator found in the LS17 and LS26 is now utilized in the SP17, and so is the same 103-step volume control – the SP16’s control had only 70 steps; adjustment of the volume is much finer now, which is especially useful at low volume settings. The maximum input is 9 volts RMS, versus a maximum of only 3.5 volts RMS before overload in the SP16. Bandwidth has increased, output impedance has been lowered, improving the SP17’s ability to drive long cables and low impedance amplifiers. Gain in the line section has been reduced very slightly, from 11.5 to 11.1dB. This all results in greater articulation, better image focus and an apparent speed resulting from lower distortion and a lack of smearing. Bass definition and control are improved, and dynamics simply pop. And because it is so quiet, the music stands out in bold relief against a black background. Check our other listings for more interesting items. Free shipping worldwide!