{"product_id":"teac-ud-505-x-headphone-amplifier","title":"TEAC UD-505-X Headphone Amplifier","description":"\u003cp\u003eDual monaural USB DAC\/headphone amplifier supporting DSD512 and PCM32\/768.\u003c\/p\u003e\n\u003cp\u003eThe UD-505 is a flagship dual monaural USB DAC with an integrated fully-balanced headphone amplifier, that fuses high-end audio design concepts and TEAC’s decades of audio design experience, in an A4-sized footprint.\u003c\/p\u003e\n\u003cp\u003eLike its predecessor models, the UD-501 and UD-503, it employs a dual monaural circuit design to process audio signals with even greater purity, with the latest VERITA AK4497 DAC chip used on each of the two channels. This improves the S\/N (signal to noise) ratio by processing each channel individually in monaural mode, as well as delivering DSD512 (22.5MHz) native and 768kHz\/32-bit PCM playback capabilities.\u003c\/p\u003e\n\u003cp\u003eThe Analog section, which is one of the keys to sound quality, includes four TEAC-HCLD buffer amp circuits process different drive modes, - fully-balanced drive for balanced output, and parallel drive mode for unbalance output, - to achieve enhanced acoustic expressive.\u003c\/p\u003e\n\u003cp\u003eThe headphone section is remarkable. A totally new 4.4mm headphone jack, called Pentaconn, is employed, allowing balanced and active ground connections within a single jack, while conventional 1\/4\" phone jacks are also provided.\u003c\/p\u003e\n\u003cp\u003eIn addition to a wide range of digital and Analog inputs, a Bluetooth® receiver supporting LDAC™ and Qualcomm® aptX HD™ allows you to enjoy high-quality wireless audio streaming from your smartphone on this flagship USB DAC.\u003c\/p\u003e\n\u003cp\u003eThe UD-505 is a compact and high-spec USB DAC and headphone amplifier that supports today’s high sampling rate Hi-Res formats.\u003c\/p\u003e\n\u003csection id=\"block-features\"\u003e\n\u003csection\u003eFor the ultimate digital-to-Analog performanceHigh-performance VERITA AK4497 DACs supporting DSD512 and PCM32\/768\n\u003cp\u003e\u003cimg alt=\"UD-505\" src=\"https:\/\/teac.jp\/images\/products\/_teac_audio\/ud-505\/ud-505_p_4497_velvet_sound.jpg\"\u003e\u003cbr\u003eThe UD-505 employs the latest VERITA AK4497 (developed by Asahi Kasei Microdevices) on each of the left and right channels. It is a highly-regarded high-end audio DAC, and supports DSD512 (22.5MHz) and 768kHz\/32-bit PCM formats, achieving industry-leading ultra low distortion levels. OSRD (Over-sampling Ratio Doubler) technology, meanwhile, significantly reduces out-of-band noise. As a result, the UD-505 has the refinement necessary to make the most of Hi-Res formats, successfully processing information that lies outside the audible range.\u003c\/p\u003e\n\u003csmall\u003e* The AK4497 is the flagship product of the Asahi Kasei Microdevices Audio4pro™ family, which has been developed for professional audio equipment and high-end digital audio.\u003c\/small\u003eDual monaural circuit design and fully-balanced design\n\u003cp\u003eA dual monaural circuit configuration is used throughout, from the power supply (including power transformers), to the D\/A converters in the digital section and the Analog output stage. From the high-performance VERITA AK4497 D\/A converters to the massive toroidal-core power transformers, each element is configured for single channel processing. This prevents mutual interference effects while reproducing a rich acoustic expressiveness.\u003cbr\u003eIn addition, the Analog audio signals of both the left and right channels are processed in full balanced mode soon after the D\/A converters all the way to the output terminal, contributing to an improved S\/N ratio and extended dynamic range. This allows the fantastic sense of air that Hi-Res formats possess to be processed and conveyed without any losses.\u003c\/p\u003e\nHigh-quality wireless audio streaming via Bluetooth®\n\u003cp\u003eIn addition to conventional SBC and AAC codecs, the UD-505 also supports LDAC™ (24\/96 Hi-Res audio transmission), and Qualcomm® aptX™ HD, a codec that uses 24\/48 format transmission. These allow you to playback playlists on your smartphone and tablet wirelessly.\u003cbr\u003e\u003cimg alt=\"UD-505\" src=\"https:\/\/teac.jp\/images\/products\/_teac_audio\/ud-505\/ud-505_w_bt_ldac_aptxhd.jpg\"\u003e\u003c\/p\u003e\nDual on-board clocks for 44.1k and 48kHz, and external clock input\n\u003cp\u003eInstead of referencing to an unstable and noisy PC clock during USB audio playback, a more accurate and on-board clock is generated by a high-precision, low phase-noise, audio-grade crystal oscillator for USB asynchronous transfer mode. The UD-505 accommodates two on-board clocks exclusively for 44.1kHz and 48kHz sampling frequencies and applies the appropriate one to incoming digital signals - those that are multiples of 44.1k or 48k - to reproduce identical sound to the original by eliminating jitter effects on the audio signal.\u003cbr\u003eIn addition, an external 10MHz clock input is also provided, to synchronise with an even higher-precision master clock generator, such as the TEAC CG-10M, for yet further upgraded audio playback with excellent sound quality.\u003c\/p\u003e\n\u003cimg alt=\"UD-505\" src=\"https:\/\/teac.jp\/images\/products\/_teac_audio\/ud-505\/ud-505_p_upconvert.jpg\"\u003eUp-conversion up to 384kHz\/32-bit PCM and 24.5MHz DSD\n\u003cp\u003eEmploying RDOT-NEO (Refined Digital Output Technology NEO), a fluency algorithm that renders digital audio signals smoothly, the UD-505 up-converts PCM digital signals up to 384kHz\/32-bit PCM and 24.5MHz DSD. With the up-conversion function activated, you will hear an improvement in quality, even with music that you are familiar with.\u003c\/p\u003e\n\u003cimg alt=\"UD-505\" src=\"https:\/\/teac.jp\/images\/products\/_teac_audio\/ud-505\/ud-505_w_bulkpet.jpg\"\u003e\"Bulk Pet\" USB transfer technology for enhanced audio quality\n\u003cp\u003eWhen transferring large volumes of digital data for Hi-Res audio sources through USB cables using conventional isochronous transfer mode, large variations can occur in the processing loads of the sending computer and the receiving USB DAC. This can cause sound to drop out and other problems to occur. However, with our new USB transmission technology - dubbed \"Bulk Pet\" - a fixed amount of data is transmitted constantly, levelling out the processing burden on both devices and contributing to stable data transmission. Changing the processing burden on the computer directly affects audio quality so users can select the setting they prefer (from four transmission modes).\u003c\/p\u003e\n\u003csmall\u003e* \"Bulk Pet\" is a registered trademark of Interface Corporation.\u003cbr\u003eFor more information about \"Bulk Pet\", please visit the Interface Corporation website.\u003cbr\u003e\u003c\/small\u003eMore digital filters than previous model\n\u003cp\u003eOn the UD-505, there are two types of DSD filters and another five types of PCM digital filters, allowing you to apply the filter that best matches the file format or type of music you're listening to. The filter can be changed at the touch of a button on the remote control, allowing you to enjoy the different sonic nuances of each filter.\u003c\/p\u003e\n\u003cstrong\u003ePCM digital filters\u003c\/strong\u003e\n\u003cdiv class=\"table-wrapper\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSharp Roll Off\u003c\/td\u003e\n\u003ctd\u003eFIR filter with a steep roll-off that sharply cuts signals outside the audio band\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlow Roll Off\u003c\/td\u003e\n\u003ctd\u003eFIR filter with a slow roll-off that gently cuts signals outside the audio band\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShort Delay Sharp\u003c\/td\u003e\n\u003ctd\u003eShort delay filter with a steep roll-off that sharply cuts signals outside the audio band\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShort Delay Slow\u003c\/td\u003e\n\u003ctd\u003eShort delay filter with a slow roll-off that gently cuts signals outside the audio band\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow Dispersion\u003c\/td\u003e\n\u003ctd\u003eShort delay filter with low dispersion that cuts signals outside the audio band\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003csmall\u003e* When receiving signals at 352.8 kHz, 384 kHz or higher, the digital filter will be disabled during processing regardless of the above setting.\u003c\/small\u003e\u003c\/p\u003e\n\u003cstrong\u003eDSD digital filter\u003c\/strong\u003e\n\u003cdiv class=\"table-wrapper\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNarrow\u003c\/td\u003e\n\u003ctd\u003eCut-off frequency of 39kHz (at 2.8M), 78kHz (at 5.6M), 156kHz (at 11.2M) or 312kHz (at 22.5M)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWide\u003c\/td\u003e\n\u003ctd\u003eCut-off frequency of 76kHz (at 2.8M), 152kHz (at 5.6M), 304kHz (at 11.2M) or 608kHz (at 22.5M)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\nIsolated digital and Analog sections\n\u003cp\u003eIn order to suppress interference between the digital and Analog sections, the UD-505 employs an independent power supply and ground circuit, so eliminating cross-interference in the signal path where digital and Analog sections connect. A digital isolator is employed at the input section to eliminate noise originating from any connected digital sources, including noise that is generated from the computer via USB, power line and the ground path. This isolation circuit also makes a significant improvement in the signal-to-noise ratio as well as the final sound quality.\u003c\/p\u003e\nDual high-capacity toroidal-core power transformers\n\u003cp\u003eThe dual monaural theme continues. Two over-sized high-capacity toroidal-core power transformers are employed in the UD-505, supplying stable, individual current sources for each of the left and right channels. This means neither channel will be affected by changes in the power consumption of the other during digital processing.\u003c\/p\u003e\nFurther enhanced Analog output circuitry\u003cimg alt=\"UD-505\" src=\"https:\/\/teac.jp\/images\/products\/_teac_audio\/ud-505\/ud-505_p_hcld.jpg\"\u003eUnique TEAC-HCLD output buffer amp circuits\n\u003cp\u003eAt the heart of Analog section are TEAC-HCLD (High Current Line Driver) buffer amp circuits, designed to enhance current supply. Each channel employs two identical buffer amps that process differential drive for balanced output, and parallel drive for unbalanced output. By increasing the current supply to the buffer amp section, the Analog audio signal is passed to the next step without any loss of dynamism.\u003c\/p\u003e\nTEAC-QVCS high-precision volume control with four circuits\n\u003cp\u003eprocessing performance, a wide range of Analog\/digital inputs, and fixed\/variable level XLR (balanced) and RCA (unbalanced) outputs. These allow you to build a fully-fledged hi-fi system around the UD-505 with a stereo amplifier\/pair of monaural power amplifiers and floorstanding speakers, or a simplified system based on a pair of active speakers\u003cbr\u003eThe TEAC-QVCS (Quad Volume Control System) is a precise volume control design incorporated in the pre-amp section. This circuit employs four sets of variable gain-amps controlling volume for left, right, positive and negative (L+, L-, R+, R-). Each variable gain-amp is located on a simplified signal path which helps eliminate interference noise by creating a shorter signal path.\u003cbr\u003eIn addition, the TEAC-QVCS provides precise volume control in 0.5dB steps in \"dB\" display mode, or 100 steps in \"step\" display mode.\u003c\/p\u003e\n\u003cimg alt=\"UD-505\" src=\"https:\/\/teac.jp\/images\/products\/_teac_audio\/ud-505\/ud-505_p_qvcs.jpg\"\u003eDesigned to bring out the maximum potential of your headphonesDiscrete circuit design with balanced drive\n\u003cp\u003eThe UD-505's headphone amplifier circuit provides balanced-drive by using the TEAC-HCLD circuit, - comprised of four output transistors for each left and right channel - for headphone output. Furthermore, by driving these transistors in parallel when a single-ended headphone is connected, the UD-505 delivers stronger driving power than most ordinary single-ended headphone amps provide. When listening to conventional headphones, it also operates in Class-A (by expanding the Class-A range of operation), despite using a Class-A\/B amplifier. With challenging 600Ω high-impedance headphones for example, the UD-505 allows you to bring out the potential of these type of headphones.\u003c\/p\u003e\nActive-ground drive offers a new headphone drive mode\n\u003cp\u003eThe active-ground is a new driving mode that employs the principles of balanced connection. It forcefully drives the ground, by lowering the ground level to 0V, providing an ideal ground condition (rather than just connecting to the conventional ground) This means it also suppresses hum noise from the power supply and enhances the purity of silent pauses by lowering the noise floor. Subtle detail, such as the breathing of artists and the textures of sounds, will feel even more convincing.\u003cbr\u003e\u003cimg alt=\"UD-505\" src=\"https:\/\/teac.jp\/images\/products\/_teac_audio\/ud-505\/ud-505_p_active_gnd.jpg\"\u003e\u003c\/p\u003e\nPentaconn, a totally new single-plug connector for balanced headphone drive\n\u003cp\u003eIn addition to the dual conventional 1\/4\" TRS jacks for balanced connection, the UD-505 employs a newly designed single headphone jack for balanced drive. The Pentaconn jack is a new 4.4mm 5-pole jack that has been developed by NIPPON DICS Co., Ltd, and complies the RC-8141C JEITA Standard, providing a single-jack solution for balanced headphones. More Pentaconn jack-equipped headphones and cables are expected in the near future.\u003c\/p\u003e\nObsessively well-designedFull-metal body for functionality and beauty\n\u003cp\u003eJust as with the successful Reference 503 series, the UD-505 employs aluminum-alloy panels - including iconic side guard-bars - and a robust metal chassis with a compact A4-size footprint* that completely matches with the 500 series and the new CG-10M master clock generator. The full metal construction isn't just beautiful, it's also functional. It's highly effective at isolating the internal circuits from electromagnetic noise.\u003c\/p\u003e\n\u003csmall\u003e* Not including connectors, knobs and other protruding parts.\u003c\/small\u003eSymmetrically laid out XLR and RCA output jacks\n\u003cp\u003eThe UD-505 is equipped with both balanced and unbalanced Analog audio outputs. A pair of XLR connectors and another pair of RCA connectors - each gold-plated - are symmetrically laid out, hinting at the dual monaural arrangement inside, and allowing a wide range of possible audio configurations. A wide-spaced pitch layout for the RCA outputs accommodates professional grade plugs with large-diameter shells. The UD-505 has a total of 5 digital inputs: USB audio, coaxial, optical on the rear panel, and a combination jack on the front panel (for coaxial and optical, supporting PCM 24\/192 and DSD64 in DoP format).\u003cbr\u003eA pair of RCA Analog audio input connectors allow the UD-505 to function as a pre-amplifier equipped with a high quality and precision volume control (TEAC-QVCS).\u003c\/p\u003e\n\u003cimg alt=\"UD-505\" src=\"https:\/\/teac.jp\/images\/products\/_teac_audio\/ud-505\/gallery\/ud-505-b_rear.jpg\"\u003eThree-position, patent-registered \"Pin-Point\" feet for perfect stability\n\u003cp\u003e\u003cimg alt=\"UD-505\" src=\"https:\/\/teac.jp\/images\/products\/_teac_audio\/ud-505\/ud-505-b_w_insulator.jpg\"\u003eThe UD-505 employs TEAC's patented \"Pin-Point\" feet. These ingeniously comprises two separated metal sections in a in an integrated housing. One is has a spiked top and is attached to the bottom of the chassis, the other is a basin-shaped base that hangs down from the spiked section with a flange-shaped cup to simply installation.\u003cbr\u003eThree \"Pin-Point\" foot are used for support, two at the front and one at the rear, for excellent stability, even on an uneven floor.\u003cbr\u003eAs a result, the three \"Pin-Point\" feet help improve the accuracy of clock oscillation by minimising vibrations and resonance. This, in turn, reduces mid and low frequency muddiness, improves the soundstage and enhances fine sound detail.\u003c\/p\u003e\n\u003csmall\u003e* Patent numbers 4075477 and 3778108\u003c\/small\u003eFull-dot OLED display with excellent visibility\n\u003cp\u003eA high contrast full-dot OLED (organic EL display) with 4-step dimmer is employed, for excellent visibility. Even better, a highly legible, large font size allows you to easily verify the volume level, input source and other information, even when sat at a distance.\u003c\/p\u003e\n\u003cimg alt=\"UD-505\" src=\"https:\/\/teac.jp\/images\/products\/_teac_audio\/ud-505\/hr_audio_player_logos.jpg\"\u003eFree TEAC HR Audio Player software for DSD512 playback on both Windows and Mac\n\u003cp\u003eThe next-generation Hi-Res formats, DSD512 (22.5MHz) and PCM 768kHz\/32-bit are supported via the TEAC HR Audio Player software for Windows and Mac. This software guarantees the best available playback quality with any combinations of audio format and computer configurations via a single USB cable. All the user has to do is choose the UD-505 from the pull-down menu showing target output devices.The TEAC HR Audio Player is available from TEAC's web site, and is completely free to use.\u003c\/p\u003e\n\u003csmall\u003e* Use on a Windows computer requires a free driver, also provided by TEAC.\u003c\/small\u003e\u003c\/section\u003e\n\u003c\/section\u003e\n\u003csection id=\"block-functional-list\"\u003eFeatures at a glance\n\u003cul\u003e\n\u003cli\u003eHi-Res audio playback supporting DSD512 (22.6MHz) and PCM 768kHz\/32-bit PCM\u003c\/li\u003e\n\u003cli\u003eDual monaural circuit design with a high-end AKM VERITA AK4497 DAC on each left and right channel\u003c\/li\u003e\n\u003cli\u003e5 types of PCM digital filters and 2 types of DSD digital filters\u003c\/li\u003e\n\u003cli\u003eUp-conversion up to 24.5MHz DSD and 384kHz\/32-bit PCM\u003c\/li\u003e\n\u003cli\u003eDual on-board clocks for 44.1kHz and 48kHz frequencies, and 10MHz external clock input\u003c\/li\u003e\n\u003cli\u003eBluetooth® receiver supporting LDAC™ and Qualcomm® aptX™ HD\u003c\/li\u003e\n\u003cli\u003eTEAC-HCLD output buffer circuit and TEAC-QVCS volume control for high quality sound\u003c\/li\u003e\n\u003cli\u003eDual toroidal-core power transformers\u003c\/li\u003e\n\u003cli\u003eDigital Isolator for separated digital and Analog sections\u003c\/li\u003e\n\u003cli\u003e4.4mm 5-polar Pentaconn jack and dual 1\/4” TRS jacks for balanced and active-ground drives\u0026amp;\u003cspan\u003e \u003c\/span\u003e\u003csmall\u003e* ”Pentaconn” is a registered trademark of NIPPON DICS Co., Ltd., complies with the RC-8141C JEITA standard\u003c\/small\u003e\n\u003c\/li\u003e\n\u003cli\u003eTEAC’s patent-registered pin-point feet in three positions for the perfect installation\u0026amp;\u003cspan\u003e \u003c\/span\u003e\u003csmall\u003e* Japan patent No. 4075477 and No. 3778108\u003c\/small\u003e\n\u003c\/li\u003e\n\u003cli\u003eBulk Pet USB transferring technology with four transfer modes for various sound characters\u0026amp;\u003cspan\u003e \u003c\/span\u003e\u003csmall\u003e* ”Bulk Pet” is a registered trademark of Interface Corporation.\u003c\/small\u003e\n\u003c\/li\u003e\n\u003cli\u003eUSB audio port for Hi-Res audio input from Windows\/Mac\u003c\/li\u003e\n\u003cli\u003eCoaxial and optical digital inputs on both front and back\u003c\/li\u003e\n\u003cli\u003eConvenient Analog LINE input to use the UD-505 as a pre-amplifier\u003c\/li\u003e\n\u003cli\u003eAnalog outputs with balanced XLR and conventional unbalanced RCA outputs\u003c\/li\u003e\n\u003cli\u003eHigh-contrast full-graphic organic EL display with dimmer\u003c\/li\u003e\n\u003cli\u003eFull-metal body with an A4-sized footprint\u003c\/li\u003e\n\u003cli\u003eFree TEAC HR Audio Player for DSD512 and PCM32\/768 playback\u003c\/li\u003e\n\u003cli\u003eCompliant with RoHS\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003csmall\u003e*1 ”Pentaconn” is a registered trademark of NIPPON DICS Co., Ltd., complies with the RC-8141C JEITA standard\u003cbr\u003e*2 Japan patent No. 4075477 and No. 3778108\u003cbr\u003e*3 ”Bulk Pet” is a registered trademark of Interface Corporation.\u003c\/small\u003e\u003c\/section\u003e","brand":"TEAC","offers":[{"title":"Default Title","offer_id":62857736487071,"sku":null,"price":1949.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/5532\/6111\/files\/UD505XB_1_7f6dfed2-dbfd-401d-b665-35f91ea2f270.jpg?v=1788383935","url":"https:\/\/altitudoaudio.ca\/products\/teac-ud-505-x-headphone-amplifier","provider":"Altitudo Audio","version":"1.0","type":"link"}