Дельта-сигма ΔΣ vs Мультибит 🦗 🦗 — вопросы о ЦАПах: чипы и фильтры, мультибит, музыкальность и апскейлинг

[Vit_S (Vit)]

ЦАПы с R-2R лестницей в NOS небо

NOS = non-oversampling, без оверсемплтинга (без фильтров перед превращением цифры в вольтаж). R-2R — это способ PCM-конверсии в аналог, используется лестница резисторов. R-2R очень редкие ЦАПЫ. Сейчас практически все ЦАПы это дельта-сигма и, сильно реже, мультибиты. Не знаю, как вы, но я отчетливо вижу тренд на появление все большего числа R-2R ЦАПов. Про MSB DAC и их OEM-модули даже и говорить не будем. Новые Metrum Musette, Metrum Pavane, Metrum EVO все идут с проприетарными модулями Transient. [изображение] Год назад засветились итальянцы Aqua La Scala MkII D/A Converter 4 чипа PCM1704-K [изображение] Француз TotalDAC D1 6 лестниц на канал (600 резисторов vishay) [изображение] [изображение] Секретный R-2R Audio Note DAC Питер Квортруп рассказал, что они проектируют и уже есть прототип. По слухам, прототип играл на выставке в Мюнхене и всех выиграл. CH Precision C1 Швейцарский ЦАП на 8 x PCM1704 [изображение] В чем прелесть R-2R цапов — это временная точность, а это значит предельная быстрота и точное интонирование в музыке. Все как мы любим. Часто в укор таким ЦАПам ставят слабую обработку концов диапазонов — баса и верха, но за дорогими R-2R цапами это не водится. Было бы интересно послушать, конечно. Интересно, что скажет начальник транспортного цеха R2R ЦАПики 47 Laboratory – Japan Model 4733 Midnight Blue | TDA1543 | USB, RCA | DAC/Preamp/HPA. | $ 2,000 Model 4705 Gemini | TDA1543 | RCA | Dual-mono DAC. Filterless. Separate psu ($2250) required | $ 4,500 Abbas Esoteric Audio – Ukraine DAC 0.1 | TDA1543 | RCA | NOS, tube stage | $ 378 DAC 0.1 SE | TDA1543 | RCA | NOS, tube stage | $ 698 DAC 1.0 SE | PCM56P-K | RCA | NOS, OTL tube stage, tube clock | $ 1,448 DAC 1.0 SE 6080 | PCM56P-K | RCA | NOS, OTL tube stage, tube clock, HP out, adjustable LO | $ 2,198 DAC 2.0 | TDA1541A | RCA | NOS, SE Class A stage | $ 798 DAC 2.0 SE | TDA1541R1 | RCA (x2) | NOS, OTL tube stage, 6V RMS | $ 2,448 DAC 2.1 SE | TDA1541R1 | RCA | NOS, tube stage, | $ 1,948 DAC 3.0 SE | TDA1541AS1 | RCA (x2) | NOS, tube stage, tube clock | $ ? DAC 3.1 | ? | ? | ? | $ unknown DAC 4,0 | PCM58 | Coax (x2) | RCA (x2) | ? | $ 4,900 Note from Abbas on 18 Jan 2021: DAC portfolio will going forward be limited to six DACs - TDA1540, TDA1541 (two versions), TDA1543, PCM58, PCM63 - which will only be available in Special Editions Acoustic Plan – Germany DigiMaster | PCM1704U-K | USB, BNC, I2S | Analogue filtering. Tube output stage | $ 3,850 Acuhorn – Poland R2R | R2€ | RCA, Toslink, I2S | DAC/Streamer. Soekris dam1121, FPGA Spartan 6. RPi/MoOde. Direct/buffered output | £3600 R2R H | R2R | USB, Toslink, I2S | DAC/HPA. Soekris dam1121 0,02%, FPGA Spartan 6. Class-A SS HPA. Direct/ buffered output | €4000 R2R TS | R2R | USB, RCA, Toslink | DAC/PRE. Soekris dam1121 0,02%, FPGA Spartan 6. Stepped attenuator VC. Tube output stage | €4000 R2R XD | R2R | USB, RCA, Toslink | Fully balanced DAC. Soekris dam1121 0,02%, FPGA Spartan 6. Direct SE/BAL output | €4600 AKS Audio – Switzerland DAC1702N | PCM1702-J | USB, RCA (x2), Toslink (x2) | $ 1,500 ALEKS Audio – Russia DAC Luxor Solist-AD 1865| AD1865 | USB, RCA | Tube output stage | $ 1,595 ANK Audiokits – USA DAC 2.1 | AD1865N | RCA, USB optional | NOS. Flterless. Tube output stage | $ 1,475 (STD). $ 1,700 (SE) DAC 4.1 LE Triple C-Core | AD1865N | RCA, USB optional | NOS. Filterless. Transformer coupled output stage | $ 2,650 (Kit). $ 3,500 (Assembled) DAC 5.1 SE | AD1865NK | RCA, AES/EBU, USB optional | | NOS. Filterless. Transformer coupled output stage | $ 4,900 (Kit). $ 6,000 (SE Professional, Asssembled) Aqua - Acoustic Quality – Italy La Voce S3 Discrete DAC | R2R | USB, BNC, I2S, optional (AES, RCA, Toslink, AT&T) | FPGA, no digital filtering. Upgradeable modular design. Fully discrete analog stage. RCA/XLR outputs | € 3,870 La Scala MKII Optologic DAC | R2R | USB, RCA, BNC, AES, I2S, optional (AT&T) | FPGA, no digital filtering. Upgradeable modular design. Tube hybrid output stage. RCA/XLR outputs | € 6,860 Formula xHD Optologic DAC Rev.2 | R2R | USB, RCA, BNC, AES, I2S, modular (AES, Toslink, AT&T) | FPGA, no digital filtering. Upgradeable modular design. Transformer-based true balanced output stage | € 13,475 Aries Cerat – Cyprus Heléne DAC | AD1865N-K | USB, RCA, BNC, AES | NOS, 8 IC/ch, tube output stage, Bal Out | € 12,800 Kassandra 2 REF | AD1865N-K | USB, RCA x2, Toslink | 16 IC/ch, tube output stage, VC + Bal Out optional | € 22,000 Kassandra 2 SIG | AD1865N-K I USB, RCA x2, Toslink | 20 IC/ch, tube output stage, separate psu, VC + Bal Out optional | € 45,000 Kassandra 2 SIG LE | AD1865N-K | USB, RCA x2, Toslink | 24 IC/ch, tube output stage, separate psu, VC + Bal Out optional | € 82,000 Homerus DAC | details yet tba | € 169,000 Arkhipov’s Laboratory – Russia DAC63 | PCM63P-K | RCA, Toslink, optional (USB, Ethernet) | NOS, tube-amorphous transformer output stage, separate PS optional | $1000 (S/PDIF only); $1300-1600 (with USB or NMR renderer); $500 (separate PS) DAC1541 | TDA1541A | RCA, Toslink, optional (USB) | NOS, tube-amorphous transformer output stage, separate PS optional | $900 (S/PDIF); $1200-1300 (with USB); $500 (separate PS) DAC1702 | PCM1702 | like DAC1541 DAC1861 | AD1861 | like DAC1541 DAC56 | PCM56 | RCA | NOS | $ 600 Audial – Serbia S4 | TDA1541A | USB, BNC | NOS. RCA/XLR outputs | € 1,950 Model S MkIII | TDA1541A | BNC, I2S/SIM | NOS. RCA/XLR outputs | € 1,850 Audio ALT – Russia ALT N4 | PCM53? | RCA | NOS DAC/HPA | Price unknown ALT N4 SE | PCM53? | USB, RCA | Speaker/Headphone NOS DAC/AMP | Price unknown Audio-gd – China R2R 11 | R2R | USB, RCA, Toslink | NOS, DAC/PRE/HPA | $ 350 R2R 28 | R2R | USB, RCA, Toslink, I2S, AES | Balanced DAC/PRE/HPA | $ 1,200 R2R 27 | R2R | USB, RCA, Toslink, I2S, AES | Balanced DAC/PRE/HPA | $ 2.090 R-1 | R2R | USB, RCA, BNC, Toslink, I2S, AES | Balanced DAC | $ 890 R-8 | R2R | USB, RCA, Toslink, I2S, AES | Balanced DAC | $ 1,680 R-7 | R2R | USB, RCA, BNC, Toslink, I2S, AES | Balanced DAC | $ 2,750 R-8HE | R2R | USB, RCA, Toslink, I2S, AES | Balanced DAC. Regenerative PS | $ 2,600 R-7HE | R2R | USB, RCA, BNC, Toslink, I2S, AES | Balanced DAC. Regenerativ PS | $ 3,680 Audio Mirror – USA Tubadour III | AD1865N-K | USB, RCA, Toslink, AES, I2S optional | NOS. Tube output stage | $1500 Tubadour III SE | AD1865N-K | USB, RCA, Toslink, AES, I2S | NOS. Tube output stage | Balanced output optional | $2500 Audio Note – UK DAC 0.1x | TDA1543 | USB, RCA | NOS. Filterless. Tube output stage | $ ? DAC 1.1x/II | AD1865N | RCA, AES | NOS. No digital filtering. Tube output stage. STD/SIG versions | $ ? DAC 2.1x | AD1865N | RCA, AES | NOS. No digital filtering. Tube output stage. STD/SIG/BAL versions | $ ? DAC 3.1x/II Balanced | AD1865N | NOS. No digital filtering. Transformer coupled tube output stage (RCA+XLR). STD/SIG/BAL versions | $ ? DAC 4.1x Balanced | AD1865N | NOS. No digital filtering. Transformer coupled tube output stage (RCA+XLR). BAL (1.5V)/SIG (3.2V) versions | $ ? DAC 5 | AD1865N | NOS. No digital filtering. Transformer coupled tube output stage (RCA+XLR). SPC/SIG versions | $ ? Fitth Element/Force | AD1865N | NOS. No digital filtering. Separate PSU. Tube input stage. Transformer coupled tube output stage (RCA+XLR). SPC/SIG versions | $ ? Audio-Optimum – Germany NOS-DAC | TDA1543 | RCA | NOS | € 2,490 NOS-DAC 2 | TDA1543 | (3x) RCA or XLR | DAC/PRE/HPA | € 3,790 BorderPatrol – USA DAC S | DA1543 | USB and/or RCA | NOS | $ 1,075-1,575 DAC SE-i | TDA1543 | USB and/or RCA | NOS. Jupiter caps, improved PS | $ 1,425-1,925 CH Precision – Switzerland C1 D/A Controller | PCM1704 | Basic (RCA, Toslink, AES/EBU, CH-link), Optional (USB, LAN, Analog, Clock) | Modular input boards, ADC/DAC, Streamer, PRE/VC, Fully Balanced, DSP, ext PSU/Clock optional | C1 D/A CHF 27,800 | X1 PSU CHF 15,100 | T1 Clock CHF 22,100 C1 Mono D/A Controller | PCM1704 | Inputs as above | 3-box system, ext PSU (x3) optional | CHF 63,500 Computer Audio Design – UK CAD 1543 MKII DAC | TDA1543/N2 | USB | NOS. Filterless | £ 7,250 Concert Fidelity – Japan DAC-040NX | Philips 16-bit | USB, RCA, BNC | NOS, D/D & D/A section customizable, tube buffer stage | $ 10,000 Denafrips – China Ares II | R2R | USB, RCA x2, Toslink x2 | NOS/OS, 24bit R2R+6bit DSD, RCA+XLR out | $ 775 Pontus | R2R | USB, RCA, BNC, Toslink, AES/EBU, I2S | NOS/OS, 24bit R2R+6bit DSD, fully balancec | $ 1,725 Venus II | R2R | USB, RCA, BNC, Toslink, AES/EBU, I2S | NOS/OS, 26bit R2R+6bit DSD, fully balanced | $ 3,000 Terminator | R2R | USB, RCA, BNC, Toslink, AES/EBU x2, I2S x3 | NOS/OS, 26bit R2R+6bit DSD, fully balanced | $ 4,500 Terminator-Plus | R2R | USB, RCA, Toslink, AES/EBU x2, I2S x3 | NOS/OS, 26bit R2R+6bit DSD, fully balanced | $ 6,550 DIXO Audio – Israel USB portable DAC | LTC2753 | USB | DAC/HPA | € 200 USB/SPDIF portable DAC | LTC2753 | USB, RCA (or Toslink) | DAC/HPA | € 400 Table top DAC | LTC2752/LTC2758 | USB, RCA, Toslink | DAC/PRE/HPA, SPDIF out, XLR out | € 1,200/2,000 (16bit/18bit) Eleven Audio XIAUDIO – Taiwan SagraDAC | R2R | USB, RCA1 (2x), BNC, Toslink, AES, I2S | Soekris DAM1941 (?), SE/BAL output | $ 3,400 Etalon Sound – Russia Dream DAC | R2R | USB, RCA, Toslink (x2), AES/EBU | Fully balanced. HP out. Proprietrary ‘Synchronous VC’ | € 10,000 DAC Mini | R2R | USB, RCA, Toslink (x2), AES/EBU | Fully balanced. Transformer-coupled HP out. Proprietrary ‘Synchronous VC’. Separate PSU | € 10,000 HiFiMAN – China R2R2000 | PCM1704K | USB, BT | FPGA. MicroSD. BAL HP out | $ 2,500 R2R2000 Red | PCM1702 | USB, BT | FPGA. MicroSD. BAL HP out | $ 900 HOLO Audio – China May DAC | R2R | USB, RCA, BNC, AES, Toslink, I2S (x2) | Dual Mono. NOS/OS/OS-PCM/OS-DSD | $ 3,800 (L1), $4,300 (L2), $ 5,000 (KTE) Spring 2 DAC | R2R | USB, RCA, BNC, AES, Toslink, I2S | NOS/OS, DSD | $ 1,700 (L1),…

Как-то длинновато получилось, но ничего, в теме еще длиннее.