TOPPING PRE90 + EXT90 Preamp and Input Extender

  A preamp and input extender for the TOPPING 90 stack The Pre90 and Ext90 are a preamplifier and input extender that take the D90/SE stack to a whole new level. Together, they allow you to connect up to six additional sources, output to additional amps (such as a tube amp), and more--essentially transforming the 90 stack into the Grand Central Station of audiophile setups.  Fully balanced preamp with +16dB gain The Pre90 is a fully-balanced amplifier that uses the same NFCA (nested feedback composite amplifier) scheme as the A90, delivering a dynamic range of 145dB and no audible noise. With +16dB of maximum gain, it can amplify the weakest of signals into the receiving amplifier.  Run two amps from the Pre90 The Pre90 can be configured to run to XLR only, RCA only, or XLR+RCA. This final option allows you to run the Pre90 to two different amps, such as an A90 and a DarkVoice 336SE, without having to plug and unplug cables every time you want to jump from one amp to the other.  Volume safeguards protect equipment and hearing The Pre90 features a volume safeguard designed to protect your equipment and ears. If you end a listening session with the volume set high, the Pre90 will automatically reduce the volume to a safe level the next time you listen, thus preventing your speakers (and ears) from blowing out.  Fully-functional remote  The Pre90 comes with a fully-functional remote that allows you to control every aspect of the Pre90 from volume to gain to user settings. You can even use it to save the current program, locking in the volume for a specific input/output configuration. This is useful if you’re running multiple sources and amplifiers--which each need their own volume setting--to and from the Pre90. Ext90 extender adds 6 input ports The Ext90 adds six input ports to the TOPPING 90 stack: 2 RCA and 4 XLR. This significantly expands the input options of the stack, essentially allowing you to plug in every source you have. For audiophiles looking for an all-in-one solution, this is it.  Product highlights Fully balanced pre-amp with +16 maximum gain Run two amps from the pre-amp Safe volume function protect equipment and hearing Fully functional remote control Add up to 6 input ports to your 90 stack THD+N: <0.00007% @1kHz A-wt THD: <0.0003%@20-20kHz 90kBW SINAD: 124dB @1Khz A-wt SNR SE IN/SE OUT: 141dB @1kHz A-wt BAL IN/SE OUT: 137dB @1kHz A-wt SE IN/BAL OUT: 145dB @1kHz A-wt BAL IN/BAL OUT: 138dB @1kHz A-wt Dynamic range SE IN/SE OUT: 141dB @1kHz A-wt BAL IN/SE OUT: 137dB @1kHz A-wt SE IN/BAL OUT: 145dB @1kHz A-wt BAL IN/BAL OUT: 138dB @1kHz A-wt Frequency response: 20 - 100,000Hz (+/-0.1dB) Output level SE IN/SE OUT: 25Vpp BAL IN/SE OUT: 25Vpp SE IN/BAL OUT: 50Vpp BAL IN/BAL OUT: 50Vpp AP measured noise level @A-wt SE IN/SE OUT: <0.7uVrms BAL IN/SE OUT: <0.7uVrms SE IN/BAL OUT: <0.9uVrms BAL IN/BAL OUT: <0.9uVrms Actual noise level @A-wt SE IN/SE OUT: <0.3uVrms BAL IN/SE OUT: <0.3uVrms SE IN/BAL OUT: <0.6uVrms BAL IN/BAL OUT: <0.6uVrms Channel crosstalk @1kHz SE IN/SE OUT: -130dB BAL IN/SE OUT: -137dB SE IN/BAL OUT: -140dB BAL IN/BAL OUT: -140dB Channel balance SE IN/SE OUT: +10db - -60dB +/-0.5dB BAL IN/SE OUT: +10db - -60dB +/-0.5dB SE IN/BAL OUT: +16db - -60dB +/-0.5dB BAL IN/BAL OUT: +16db - -60dB +/-0.5dB IMD CCIF @(18kHz+19kHz): -115dB IMD SMPTE @(60Hz+7kHz): -115dB@SMPTE4: 1 Input sensitivity SE IN/SE OUT: 9.2Vrms@0dB BAL IN/SE OUT: 9.3Vrms@0dB SE IN/BAL OUT: 9.2Vrms @0dB BAL IN/BAL OUT: 9.3Vrms@0dB Volume range SE IN/SE OUT: +10db - -99dB BAL IN/SE OUT: +10db - -99dB SE IN/BAL OUT: +16db - -99dB BAL IN/BAL OUT: +16db - -99dB Output impedance SE IN/SE OUT: 20Ω BAL IN/SE OUT: 20Ω SE IN/BAL OUT: 40Ω BAL IN/BAL OUT: 40Ω Output DC Configuration: <1mVrms What’s included Pre90 contents list 1x Pre90 Preamplifier 1x remote 1x AC cable 1x user manual 1x warranty card Ext90 Contents list 1x Ext90 input extender 1x aviation connector cable 1x user manual 1x warranty card What pairs well TOPPING A90 Amplifier TOPPING D90 DAC DarkVoice 336SE Tube Amplifier