{"title":"Analog Preamplifiers","description":"\u003ch3\u003eOur preamplifiers are the heart of your system!\u003c\/h3\u003e\n\u003cp\u003eAudio by Van Alstine offers you great preamplifiers at rational prices for true state-of-the-art musicality. We get the best out of vacuum tubes, discrete semiconductors, and hybrid chips to provide the liquid and transparent performance you want.\u003c\/p\u003e","products":[{"product_id":"transcendence-10-rb-preamplifier","title":"Transcendence 10 RB Preamplifier","description":"\u003cp\u003e\u003cstrong\u003eThe Transcendence 10 RB is an all-tube preamplifer that will appeal to audio purists embracing minimal setups and anyone looking for affordably priced, astonishingly detailed and musical tube sound.\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eWith the Transcendence 10 RB, we have taken everything we know about getting tubes to work as well as they possibly can and rolled it into a minimal yet functional package. We have packaged these stunning circuits into a reduced feature chassis that will serve the needs of audio purists and budget sensitive audiophiles. \u003cmeta charset=\"utf-8\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eRemote volume and mute functions are now standard on all RB preamplifiers.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003eThe audio circuits are an improvement of our award winning Transcendence 8 tube design. In addition, we have recently completed extensive testing and refinement of our already class leading layout practices and employed those findings into the Transcendence 10 RB design. This engineering has resulted in the lowest noise tube preamplifier we have ever offered. The Transcendence 10 RB is an astonishingly natural, engaging, dynamic, high-resolution preamplifier that can interface seamlessly into and improve the most demanding audio systems.\u003cbr\u003e\u003cbr\u003eThe T10 RB is shipped with 2 premium select 6922\/ECC88\/6DJ8 tubes. 6CG7 or 6N1P tubes can also be used.\u003cbr\u003e\u003cbr\u003eOnly the highest quality parts are used. We use 1% precision metal film resistors and all capacitors in the signal path are select polypropylene types.\u003cbr\u003e\u003cbr\u003eThe Transcendence 10 RB also includes an exquisite headphone amplifier capable of driving the most demanding headphone loads.\u003c\/p\u003e\n\u003ch3\u003ePower Supply and Layout\u003c\/h3\u003e\n\u003cp\u003eAVA has long been an advocate of rock solid power supplies, and the power supply used in the T10 RB is no exception. The high voltage supplies are based around an RC PI network driving four active high voltage regulators, one for each tube section. This design takes supply noise and interaction down to nearly zero. In addition, there are separate regulated power supplies for the tube heaters and the headphone amplifier. The main circuit board uses multiple isolated ground planes strategically interconnected to eliminate the effects of ground currents.\u003cbr\u003e\u003cbr\u003eA very quiet custom made shielded power transformer completes the power supply design. \u003cbr\u003e\u003cbr\u003eThe Transcendence 10 RB power supply is an incredibly quiet and rock stable platform on which our audio circuits can perform their best.\u003c\/p\u003e\n\u003ch3\u003eChassis Design\u003c\/h3\u003e\n\u003cp\u003eOur goal with the RB chassis was to eliminate functions that audio purists don't use. This significantly reduces the parts and labor costs without compromising the audio quality. It allows us to offer uncompromising sonic beauty at a much lower cost than you would ever expect.\u003cbr\u003e\u003cbr\u003eThe RB Chassis has a precision volume control with remote controlled volume and mute functions, four sets of line level inputs (with one input being used for the optional phono section, if specified) and two sets of line audio outputs. \u003cbr\u003e\u003cbr\u003eThe aluminum faceplate is finished with our incredibly durable double-anodized process. All input and output jacks are gold plated, and a removable IEC power cord is provided.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePreamplifier gain\u003c\/strong\u003e: 19dB\u003cbr\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e:  17\" wide x 12\" deep x 3.5\" high. Shipping weight is 17 pounds.\u003c\/p\u003e","brand":"Audio by Van Alstine","offers":[{"title":"No phono circuits \/ 120 VAC","offer_id":5571317432350,"sku":"","price":1199.0,"currency_code":"USD","in_stock":true},{"title":"Vision Adjustable Phono Circuits +$379 \/ 120 VAC","offer_id":5571492610078,"sku":"","price":1578.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2619\/1634\/products\/DSC_1341.jpg?v=1662737413"},{"product_id":"fet-valve-cfr-preamplifier","title":"Fet Valve CFR Preamplifier","description":"\u003cp\u003e\u003cstrong\u003eThe Fet Valve CFR is our best all-tube preamp circuits in a stunning fully remote controlled chassis.\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Fet Valve CFR preamplifier takes our best tube preamp circuits to a new level of musicality and user convenience.\u003c\/p\u003e\n\u003cp\u003eThe  Fet Valve CFR has remote volume, remote input switching, remote power, and even remote panel light dimming. Our lovely custom silver faceplate is standard, along with premium quality RCA jacks.\u003c\/p\u003e\n\u003cp\u003eThe Fet Valve CFR's audio stage is all tube, using 12AT7 tubes for gain and 12AU7 tubes as cathode followers. This combination, done with outstanding multiple regulated power supplies, provides the amazing dynamic range, transparency, and load drive capacity that we demand. It will interface seamlessly into and improve the most demanding audio systems.\u003c\/p\u003e\n\u003cp\u003eWe use all polypropylene capacitors in the signal path and the newest high-capacity power supply capacitors.\u003c\/p\u003e\n\u003cp\u003eThe Fet Valve CFR preamplifier also includes as a standard feature an exquisite headphone amplifier.\u003c\/p\u003e\n\u003ch3\u003ePower Supply and Layout\u003c\/h3\u003e\n\u003cdiv class=\"tab-pane active\" id=\"tab1-content\"\u003e\n\u003cdiv class=\"tab-pane active\" id=\"tab1-content\"\u003e\n\u003cdiv class=\"tab-pane active\" id=\"tab1-content\"\u003e\n\u003cp\u003eAVA has long been an advocate of rock solid power supplies, and the power supply used in the Fet Valve CFR is no exception. The high voltage supplies are based around six active high voltage regulators, one for each tube section. This design takes supply noise and interaction down to nearly zero. In addition, there are separate regulated power supplies for the tube heaters and the headphone amplifier. Smoothing capacitors are carefully selected modern, high-reliability, high-capacity units.\u003c\/p\u003e\n\u003cp\u003eThe main circuit board uses multiple isolated ground planes strategically interconnected to eliminate the effects of ground currents. A very quiet custom made shielded power transformer is used.\u003c\/p\u003e\n\u003cp\u003eThe Fet Valve CFR power supplies are incredibly quiet and rock stable platforms on which our audio circuits can perform their best.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eSLR Chassis Design\u003c\/h3\u003e\n\u003cp\u003eThe SLR chassis features a precision remote control volume control along with five sets of remote switchable inputs and two sets of line audio outputs. Additional functions include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA precision balance control.\u003c\/li\u003e\n\u003cli\u003eMono\/Stereo - to get mono audio sources (such as older TV and other video sources) to both left and right channels and to quiet noisy FM broadcast and old records.\u003c\/li\u003e\n\u003cli\u003eLow Gain - to allow better volume control use with the high-efficiency speakers and high gain amplifiers.\u003c\/li\u003e\n\u003cli\u003eHigh Filter - to tame excess brightness from low quality sources.\u003c\/li\u003e\n\u003cli\u003eLow Filter - to deal with warped records and turntable rumble.\u003c\/li\u003e\n\u003cli\u003eSupport for tape monitoring.\u003c\/li\u003e\n\u003cli\u003eA built-in high quality headphone amplifier.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 1\/4\" sculpted aluminum face plate is finished with our incredibly durable double-anodized process is standard. All RCA jacks are premium quality, gold plated, heavy duty parts. A removable IEC power cord is standard as well.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e: 17\" wide x 12\" deep x 3.5\" high. Shipping weight is 17 pounds.\u003c\/p\u003e\n\u003ch3\u003eReviews\u003c\/h3\u003e\n\u003cdiv class=\"tab-pane active\" id=\"tab3-content\"\u003e\n\u003cul\u003e\n\u003cli\u003ePart-Time Audiophile \u003ca href=\"https:\/\/pt.audio\/2021\/12\/03\/audio-by-van-alstine-fet-valve-cfr-preamplifier-review\/\" title=\"Audio by Van Alstine FetValve CFR Reviewers Choice Award\" rel=\"noopener\" target=\"_blank\"\u003eReviewers Choice Award\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart-Time Audiophile \u003ca href=\"https:\/\/pt.audio\/2025\/05\/30\/pt-audios-best-preamplifiers-buyers-guide-summer-2025\/\" title=\"Audio by Van Alstine FetValve CFR 2025’s Best Preamplifiers\" rel=\"noopener\" target=\"_blank\"\u003e2025 Best Preamplifiers\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart-Time Audiophile \u003ca href=\"https:\/\/pt.audio\/2024\/12\/06\/2025s-best-preamplifiers-buyers-guide-2025\/\" title=\"Audio by Van Alstine FetValve CFR 2024’s Best Preamplifiers\" rel=\"noopener\" target=\"_blank\"\u003e2024 Best Preamplifiers\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReviews for the previous generation CF, with identical audio electronics:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/www.theabsolutesound.com\/articles\/audio-by-van-alstine-fet-valve-cf-preamplifier\/\" target=\"_blank\"\u003eThe Absolute Sound\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/www.tonepublications.com\/review\/audio-by-van-alstine-fet-valve-cf-vacuum-tube-preamplifier\/\" target=\"_blank\"\u003eTone Audio\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"http:\/\/hometheaterhifi.com\/reviews\/amplifier\/preamplifier\/audio-by-van-alstine-fet-valve-cf-vacuum-tube-preamplifier-review\/\" target=\"_blank\"\u003eHome Theater Hifi\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Audio by Van Alstine","offers":[{"title":"No phono circuits \/ 120 VAC","offer_id":5706110926878,"sku":"","price":2299.0,"currency_code":"USD","in_stock":true},{"title":"Vision Adjustable Phono Circuits +$379 \/ 120 VAC","offer_id":5706110992414,"sku":"","price":2678.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2619\/1634\/products\/slr-front-800x600.jpg?v=1513546188"},{"product_id":"vision-slr-preamplifier","title":"Vision SLR Preamplifier","description":"\u003cp\u003e\u003cstrong\u003eThe Vision SLR preamplifier has our best-ever solid-state preamp circuits in a stunning fully remote controlled chassis.\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Vision SLR preamplifier takes solid-state preamplifiers to a new level of musicality and user convenience. It has remote controlled power, volume, mute, input switching, and panel dimming. A lovely silver faceplate is standard, along with premium RCA jacks and a low-distortion headphone amplifier.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe Vision SLR preamp has all of the transparency, dynamic range, linearity and pure music for which Audio by Van Alstine is known. Listen to all of your recordings again and you will hear acoustic space and musical nuance in a much more real and involving way.\u003c\/p\u003e\n\u003ch3\u003eLine Stage\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the Vision SLR's line stage are discrete, solid-state class A audio circuits. These circuits are crazy fast, enormously linear, and outrageously musical. They employ matched JFET input transistors driving a class A output stage, using a \"simple as possible but no simpler\" design philosophy. The result is a level of resolution throughout the audio spectrum that we have not been able to achieve with any IC opamp, regardless of price.\u003cbr\u003e\u003cbr\u003eEven with the extra effort to provide true discrete audio circuits to achieve our musical goals, the cost is much lower than you would expect, especially given the level of performance.\u003c\/p\u003e\n\u003ch3\u003ePower Supply\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003eThe Vision SLR's linear power supply features a toroid power transformer feeding a full wave bridge rectifier and large smoothing capacitors. This is actively regulated down to plus and minus 15 volts and followed by more large smoothing capacitors and extensive RF decoupling.\u003c\/p\u003e\n\u003ch3\u003eSLR Chassis Design\u003c\/h3\u003e\n\u003cp\u003eThe SLR chassis features a precision remote control volume control along with five sets of remote switchable inputs and two sets of line audio outputs. Additional functions include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA precision balance control.\u003c\/li\u003e\n\u003cli\u003eMono\/Stereo - to get mono audio sources (such as older TV and other video sources) to both left and right channels and to quiet noisy FM broadcast and old records.\u003c\/li\u003e\n\u003cli\u003eLow Gain - to allow better volume control use with the high-efficiency speakers and high gain amplifiers.\u003c\/li\u003e\n\u003cli\u003eHigh Filter - to tame excess brightness from low quality sources.\u003c\/li\u003e\n\u003cli\u003eLow Filter - to deal with warped records and turntable rumble.\u003c\/li\u003e\n\u003cli\u003eSupport for tape monitoring.\u003c\/li\u003e\n\u003cli\u003eA built-in high quality headphone amplifier.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 1\/4\" sculpted aluminum face plate is finished with our incredibly durable double-anodized process is standard. All RCA jacks are premium quality, gold plated, heavy duty parts. A removable IEC power cord is standard as well.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e: 17\" wide x 12\" deep x 3.5\" high. Shipping weight is 17 pounds.\u003c\/p\u003e","brand":"Audio by Van Alstine","offers":[{"title":"No phono circuits \/ 120 VAC","offer_id":5749613068318,"sku":"","price":1399.0,"currency_code":"USD","in_stock":true},{"title":"Vision Adjustable Phono Circuits +$379 \/ 120 VAC","offer_id":5749613133854,"sku":"","price":1778.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2619\/1634\/products\/slr-front-800x600_5e0ddc9a-323d-4cee-9643-fe3b93ba3a77.jpg?v=1513555442"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2619\/1634\/collections\/slr-front-800x600.jpg?v=1513554592","url":"https:\/\/avahifi.com\/collections\/preamplifiers\/tube.oembed","provider":"Audio by Van Alstine","version":"1.0","type":"link"}