{"product_id":"conrad-johnson-tea2se-phono-stage","title":"Conrad-Johnson TEA1S3b Phono-Stage","description":"\u003cdiv class=\"et_pb_module et_pb_image et_pb_image_0\" data-mce-fragment=\"1\"\u003e\u003cspan class=\"et_pb_image_wrap\" data-mce-fragment=\"1\"\u003e\u003cimg loading=\"lazy\" width=\"150\" height=\"150\" src=\"https:\/\/conradjohnson.com\/wp-content\/uploads\/2018\/12\/2019-The-Absolute-Sound-Editors-Choice-Awards.png\" alt=\"\" title=\"\" srcset=\"https:\/\/conradjohnson.com\/wp-content\/uploads\/2018\/12\/2019-The-Absolute-Sound-Editors-Choice-Awards.png 150w, https:\/\/conradjohnson.com\/wp-content\/uploads\/2018\/12\/2019-The-Absolute-Sound-Editors-Choice-Awards-100x100.png 100w\" sizes=\"(max-width: 150px) 100vw, 150px\" class=\"wp-image-3280\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/conradjohnson.com\/wp-content\/uploads\/2018\/12\/2019-The-Absolute-Sound-Editors-Choice-Awards.png\"\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"et_pb_module et_pb_text et_pb_text_0  et_pb_text_align_left et_pb_bg_layout_light\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"et_pb_text_inner\" data-mce-fragment=\"1\"\u003e\n\u003ch1 data-mce-fragment=\"1\"\u003eTEA1 Series 3 Phono Preamplifier\u003c\/h1\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003eThe TEA1 Series 3 triode equalization amplifier is a stand-alone vacuum-tube phono stage designed to satisfy the expectations of the most demanding music lovers.\u003c\/h4\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe TEA1s3 features a zero-loop feedback circuit with passive RIAA equalization. It offers two phono inputs, one with switch selectable resistive and capacitive loading allowing the user to fine-tune performance to the chosen phono cartridge. The other input is fitted with premium wide-bandwidth audio transformers installed on the PHONO 1 input to provide the higher gain and very low noise required by low output moving coil cartridges. Designed to precisely track the prescribed RIAA equalization curve, the TEA-1s3 assures absolute tonal accuracy. The low-gain audio circuit of the TEA-1s3 is comprised of two cascaded single-ended triode amplifiers. The circuit is a zero-feedback design, to eliminate the temporal inaccuracies that negative feedback introduces. RIAA equalization is established by a passive network between the two gain stages. Careful implementation of this fundamentally simple circuit results in extremely wide bandwidth and low distortion, without resorting to negative feedback.\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eThe ideal dc power supply circuit is simply a zero-impedance path to ground.\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAny deviation from this ideal is fully reflected in the audio circuits. Thus the power supplies are as important to audio performance as the audio circuits and must be accorded equal attention in design. In the TEA-1s3, each stage has its own discrete regulated DC power supply. These power supplies have been carefully designed for minimum impedance, even at the highest audio frequencies, to prevent the power supplies from degrading music reproduction.\u003c\/p\u003e\n\u003cblockquote data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe TEA1s3 is optionally available as the TEA1s3b with the step-up transformers deleted. This version of the TEA1s3 has two direct inputs, one with variable loading and one with fixed loading.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eThe full potential of any circuit design can only be realized if executed with the highest quality parts.\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe audio circuits of the TEA-1s3 use only conrad-johnson’s proprietary Teflon capacitors. In the power supplies, all capacitors are polypropylene or Teflon – there are no electrolytic capacitors anywhere in the audio circuits or their dc power supplies. The audio circuits and related power supplies both use high-precision laser trimmed metal-foil resistors, designed for ultra-low inductance. All parts in the RIAA compensation network are 1% tolerance, to assure precise tracking of the RIAA curve. Input and output connectors are gold-plated, machined oxygen free copper. Even the hookup wiring has been carefully selected for optimal audio performance.\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe casework features black anodized aluminum, brushed-polished, sides and ventilated top cover.\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eThoughtful engineering, specification of the finest available component parts, and painstaking care taken in production make the TEA-1s3 a phono equalization preamplifier without peer in music reproduction.\u003c\/p\u003e\n\u003cblockquote data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003eWe invite you to arrange an audition House Of Stereo to confirm for yourself the extraordinary musical performance of these products.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"et_pb_module et_pb_image et_pb_image_1\" data-mce-fragment=\"1\"\u003e\u003ca href=\"https:\/\/conradjohnson.com\/wp-content\/uploads\/2016\/04\/conrad-johnson-TEA1s2-Phono-Preamplifier-1080-16-9.jpg\" class=\"et_pb_lightbox_image\" title=\"conrad-johnson TEA1 Series 2 phono preamplifier\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/conradjohnson.com\/wp-content\/uploads\/2016\/04\/conrad-johnson-TEA1s2-Phono-Preamplifier-1080-16-9.jpg\"\u003e\u003cspan class=\"et_pb_image_wrap\" data-mce-fragment=\"1\"\u003e\u003cimg loading=\"lazy\" width=\"1080\" height=\"608\" src=\"https:\/\/conradjohnson.com\/wp-content\/uploads\/2016\/04\/conrad-johnson-TEA1s2-Phono-Preamplifier-1080-16-9.jpg\" alt=\"conrad-johnson TEA1 Series 2 phono preamplifier\" title=\"\" srcset=\"https:\/\/conradjohnson.com\/wp-content\/uploads\/2016\/04\/conrad-johnson-TEA1s2-Phono-Preamplifier-1080-16-9.jpg 1080w, https:\/\/conradjohnson.com\/wp-content\/uploads\/2016\/04\/conrad-johnson-TEA1s2-Phono-Preamplifier-1080-16-9-600x338.jpg 600w, https:\/\/conradjohnson.com\/wp-content\/uploads\/2016\/04\/conrad-johnson-TEA1s2-Phono-Preamplifier-1080-16-9-300x169.jpg 300w, https:\/\/conradjohnson.com\/wp-content\/uploads\/2016\/04\/conrad-johnson-TEA1s2-Phono-Preamplifier-1080-16-9-768x432.jpg 768w, https:\/\/conradjohnson.com\/wp-content\/uploads\/2016\/04\/conrad-johnson-TEA1s2-Phono-Preamplifier-1080-16-9-1024x576.jpg 1024w\" sizes=\"(max-width: 1080px) 100vw, 1080px\" class=\"wp-image-1737\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/conradjohnson.com\/wp-content\/uploads\/2016\/04\/conrad-johnson-TEA1s2-Phono-Preamplifier-1080-16-9.jpg\"\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"et_pb_module et_pb_image et_pb_image_1\" data-mce-fragment=\"1\"\u003e\u003cspan class=\"et_pb_image_wrap\" data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"et_pb_module et_pb_image et_pb_image_1\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"et_pb_module et_pb_text et_pb_text_1  et_pb_text_align_left et_pb_bg_layout_light\"\u003e\n\u003cdiv class=\"et_pb_text_inner\"\u003e\n\u003ch1\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003epeformance specifications measured at 1 kHz\u003c\/p\u003e\n\u003ch5\u003eGain: TEA1s3\u003c\/h5\u003e\n\u003cp\u003eLow Gain Input – 54 dB\u003cbr\u003eHigh Gain Input – 66 dB\u003c\/p\u003e\n\u003ch5\u003eGain: TEA1s3b\u003c\/h5\u003e\n\u003cp\u003eBoth Inputs – 54 dB\u003c\/p\u003e\n\u003ch5\u003eOverload TEA1s3\u003c\/h5\u003e\n\u003cp\u003eLow Gain – 50 mV\u003cbr\u003eHigh Gain – 12 mV\u003c\/p\u003e\n\u003ch5\u003eOverload TEA1s3b\u003c\/h5\u003e\n\u003cp\u003eBoth Inputs – 50 mV\u003c\/p\u003e\n\u003ch5\u003eHum and Noise\u003c\/h5\u003e\n\u003cp\u003eDirect Inputs – 80 dB below 10 mV input\u003cbr\u003eHigh Gain (TEA1s3 only) 72 dB below 1 mV input\u003c\/p\u003e\n\u003ch5\u003ePhase\u003c\/h5\u003e\n\u003cp\u003ephase correct\u003c\/p\u003e\n\u003ch5\u003eInput Impedance TEA1s3\u003c\/h5\u003e\n\u003cp\u003eLow Gain Input variable, 130 Ohms – 47 kOhms\u003cbr\u003eHigh Gain Input 420 Ohms Input Impedance\u003c\/p\u003e\n\u003ch5\u003eInput Impedance TEA1s3b\u003c\/h5\u003e\n\u003cp\u003eVariable Load Input 130 Ohms – 47 kOhms\u003cbr\u003eFixed Load Input 47 kOhms\u003c\/p\u003e\n\u003ch5\u003eOuput Impedance\u003c\/h5\u003e\n\u003cp\u003ebelow 200 Ohms\u003c\/p\u003e\n\u003ch5\u003eDimensions\u003c\/h5\u003e\n\u003cp\u003e15.5″D x 19″W x 3.315″H\u003c\/p\u003e\n\u003ch5\u003eNet Weight\u003c\/h5\u003e\n\u003cp\u003e23 lbs.\u003c\/p\u003e\n\u003ch5\u003e\u003cstrong\u003e3-Year Warranty\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cp\u003eEvery conrad-johnson TEA1 Series 3 Phono Preamplifier is patiently and carefully hand assembled, then individually inspected and its performance verified by an experienced audio technician.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003eThe owner is protected by our three year limited warranty covering labor and parts except vacuum-tubes.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp\u003eService is a top priority at conrad-johnson. In the event that a product does require service, it will be handled promptly and efficiently.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"et_pb_module et_pb_text et_pb_text_2  et_pb_text_align_left et_pb_bg_layout_light\"\u003e\n\u003cdiv class=\"et_pb_text_inner\"\u003e\n\u003ch5\u003e\u003cstrong\u003eProduct Reviews\u003c\/strong\u003e\u003c\/h5\u003e\n\u003chr class=\"gradient-black-left\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"et_pb_button_module_wrapper et_pb_button_0_wrapper et_pb_button_alignment_left et_pb_module\"\u003e\u003ca href=\"https:\/\/conradjohnson.com\/wp-content\/uploads\/2017\/05\/Tone_Tea1s2_Review.pdf\" class=\"et_pb_button et_pb_button_0 et_pb_bg_layout_light\" target=\"_blank\"\u003eTONE Audio\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"et_pb_module et_pb_text et_pb_text_3  et_pb_text_align_left et_pb_bg_layout_light\"\u003e\n\u003cdiv class=\"et_pb_text_inner\"\u003e\n\u003ch5\u003e\u003cstrong\u003eOwner’s Manual\u003c\/strong\u003e\u003c\/h5\u003e\n\u003chr class=\"gradient-black-left\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"et_pb_button_module_wrapper et_pb_button_1_wrapper et_pb_button_alignment_left et_pb_module\"\u003e\u003ca href=\"https:\/\/conradjohnson.com\/wp-content\/uploads\/2019\/10\/conrad-johsnon-TEA1S3-phono-preamplifier-owners-manual.pdf\" class=\"et_pb_button et_pb_button_1 et_pb_bg_layout_light\" target=\"_blank\"\u003eDownload\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/products\/conrad-johnson-TEA2-Phono-Preamplifier-1080-16-9_c213fce2-36ab-4ae8-b578-2efe1ffcb466.jpg?v=1641853994\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Conrad-Johnson","offers":[{"title":"Standard","offer_id":54366103634230,"sku":"12470","price":15959.33,"currency_code":"USD","in_stock":true},{"title":"Upgraded With Step-up Transformers","offer_id":54366103666998,"sku":"12471","price":17782.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0989\/4182\/9430\/files\/conrad-johnson-TEA2-Phono-Preamplifier-beauty-1080-16-9_85cc0cdd-7de3-4835-ac86-c502ec5b5b2e.jpg?v=1785829694","url":"https:\/\/enclothin.com\/products\/conrad-johnson-tea2se-phono-stage","provider":"enclothin","version":"1.0","type":"link"}