{"product_id":"allnic-l-8500-otl-ocl-pre-amplifier-copy","title":"Allnic L-8500 OTL\/OCL Pre-Amplifier","description":"\u003cp\u003eThe L-8500 OTL\/OCL (Output Transformer-Less\/Output Capacitor-Less) is a triple gain stage, remote controlled, line-stage preamplifier, without transformers or capacitors in its single-ended signal path.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOTL, OCL Direct Coupled preamplifier\u003c\/li\u003e\n\u003cli\u003eTwo SEPP 12B4s output\u003c\/li\u003e\n\u003cli\u003eTrue Dual Mono design\u003c\/li\u003e\n\u003cli\u003e41-step Silver Contact Constant Impedance attenuator\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"fusion-text\"\u003e\n\u003cp\u003eIn an OTL\/OCL preamplifier, there is no coupling device between the preamplifier and the power amplifier , that is, the preamplifier’s final output tubes are directly connected to the power amplifier. Normally, an Output Capacitor or Output Transformer for separating AC music signal from the DC operating potential; if this is not done, the latter will destroy the power amplifier or loud speakers.\u003c\/p\u003e\n\u003cp\u003eBut these two types of coupling devices are effectively obstacles to transmission that add their own character (color), increase distortion, and consume small signals according to physical efficiency theory. In addition, they limit signal dynamics.\u003c\/p\u003e\n\u003cp\u003eBecause of all these adverse effects, OTL\/OCL has been considered the best solution for amplifiers in order to maintain signal purity.\u003c\/p\u003e\n\u003cp\u003e* Removing these two coupling devices from the signal path, gives the best results.\u003cbr\u003e* No coloration is added to the musical signal.\u003cbr\u003e* Extremely detailed expression, natural harmonics and subtle musical decay are achieved.\u003cbr\u003e* There is the lowest distortion possible due to the absence of coupling parts.\u003cbr\u003e* The widest musical dynamics are attained.\u003cbr\u003e* Some circuit experts might worry about DC potential in the music signal, but there is no need to worry. Allnic uses a “floating power supply circuit” which prevents the creation of any DC potential in the first place.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e*The OTL\/OCL circuit is basically SEPP, “Single Ended Push Pull”, so we need a “cancellation circuit”, which adjusts the balance of signal between the upper and lower power output tubes’ input grids.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp\u003eAllnic uses the most sophisticated “Active Balanced Positive and Negative Feedback Circuit”, in which a 6AN8 pentode perfectly controls all the circuit’s entire operation with extremely low distortion and the greatest speed.\u003c\/p\u003e\n\u003ch5\u003eSpecs\u003c\/h5\u003e\n\u003c\/div\u003e\n\u003ctable width=\"100%\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth align=\"left\"\u003eTechnical Specification\u003c\/th\u003e\n\u003cth align=\"left\"\u003e \u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eInputs\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e2 x RCA, 3 x XLR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eOutputs\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e2 x RCA, 1 x XLR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eInput Impedance\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e10k ohms (RCA, XLR)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eFrequency Range\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e10 Hz to 90 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eVoltage Gain\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e+18dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eTHD (1kHz, 1V RMS)\u003c\/td\u003e\n\u003ctd align=\"left\"\u003eless 0.03%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eS\/N ratio\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e-100dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eMaximum Output\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e15V RMS (non clipping)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eOutput Impedance\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e200 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003ePower Consumption\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e120W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eTubes\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e6AN8 x 2, 12AU7 x 2, 12B4 x 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eFuse\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e3A\/230V, 5A\/120V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eDimensions\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e430mm (W), 380mm (D), 160mm (H)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eWeight\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e16kg (48.4 lbs) unpacked. 21kg (59.5 lbs) packed.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Allnic","offers":[{"title":"Black","offer_id":54940215017845,"sku":null,"price":246247.0,"currency_code":"MXN","in_stock":true},{"title":"Silver","offer_id":54940215050613,"sku":null,"price":246247.0,"currency_code":"MXN","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2222\/0805\/files\/Allnic-L-8500-side-top-1-320x202.jpg?v=1737502308","url":"https:\/\/www.kronosav.com\/en-mx\/products\/allnic-l-8500-otl-ocl-pre-amplifier-copy","provider":"Kronos AV","version":"1.0","type":"link"}