preamp - My HIFI - 二手音響，喇叭，各類影音 (官方網站)

Topping A90 Discrete

九成新, 齊包裝齊配件<br>全分立平衡座檯式耳擴連前級<br>平衡或rca input/ output<br>操作正常可以試<br>尺寸: 闊22.5, 高5, 深17cm<br><br>發燒級全分立平衡座枱式耳擴連前級 | Relay音量控制 | XLR 4-pin, 4.4mm平衡耳機輸出 | 最高500mW@600 Ohm輸出 | 支援外接 EXT90<br>A90 Discrete 採用了全分立元件重新設計了NFCA (Nested Feedback Composite Amplifier) 電路。全平衡構造，使用4x39 個電晶體建構4 個獨立的放大模組（專利）。<br><br>MY HIFI Company<br>電話/ whatsapp: 63231067 <br>歡迎試音, 試完唔啱唔緊要<br>cash/ visa/ master/ payme/ fps<br>收購二手音響, 代客寄賣, 交換, 送貨服務<br>

Marantz 7K (100v)

100v,<br>12ax7/ ecc83 x6<br>操作正常可以試<br>尺寸: 闊45.5, 高19, 深26cm<br><br>Type Tube type control amplifier<br>Rated Output / Maximum Output (1 kHz) Pre out:2V/15V<br>Frequency characteristic FM ・ AM, FM (Multiplex), TV, Auxiliary, Tape-play : 20 Hz ~ 40 kHz ± 1 db<br>RIAA deviation 20 Hz to 20 kHz ± 1 dB<br>Input Sensitivity / Impedance Microphone : 1.4mV/1M Ω<br>Phono1, 2 : 1.2mV/47k Ω<br>Tape-Head : 2.5mV/1M Ω<br>FM / AM, FM (Multiplex), TV, Auxiliary, Tape-play : 140mV/330k Ω<br>Maximum Allowable Input (1 kHz) Microphone:140mV<br>Phono1, 2 : 140 mV<br>Tape-Head:300mV<br>Power supply voltage 100 VAC, 50Hz/60Hz<br>Power consumption 35W (Electrical Appliance and Material Control Law)<br>External dimensions Width 391x Height 155x Depth 261 mm<br>Weight 5.0kg<br>Sold Separately : Dedicated Wood Case WC-7 (¥ 25,000)<br>External dimensions Width 452x Height 171x Depth 260 mm<br>Weight 2.0kg<br><br>MY HIFI Company<br>電話/ whatsapp: 63231067 <br>歡迎試音, 試完唔啱唔緊要<br>cash/ visa/ master/ payme/ fps<br>收購二手音響, 代客寄賣, 交換, 送貨服務

Luxman DA-200 解碼/ 前級/ 耳擴

Made in Japan, <br>一手用家出讓, 保養良好<br>USB DAC, Class A Preamp & Headphone Amp<br>操作正常可試音<br>尺寸: 闊36.5, 高9, 深26cm<br><br>A unique combination of analogue preamplifier, digital analogue converter with a USB input and finally a pure class A headphone amplifier.<br><br>General Description 2-channel digital-to-analogue converter<br>Sampling Frequency Digital Inputs: 32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz<br>USB Input: 32kHz, 44.1kHz, 48kHz, 96kHz<br>Resolution 24 bits<br>Digital Inputs 1 x Coaxial, 1 x Toslink optical, USB (B type)<br>Digital Outputs 1 x Coaxial, 1 x Toslink optical<br>Analogue Inputs 2 x RCA line level<br>Output Level Digital Input: 2.5V (fixed), 8.7V Max. (variable)<br>Frequency Response Digital Input: 2Hz – 60kHz (+0,-3dB)<br>Analogue Input: 3Hz – 130kHz (+0,-3dB)<br>S/N Ratio Digital Input: 119dB Analogue Input: 103dB<br>Dimensions (W x H x D) 364 x 81 x 279 (mm)<br>Weight 5.1kg<br><br>MY HIFI Company<br>電話/ whatsapp: 63231067 <br>歡迎試音, 試完唔啱唔緊要<br>cash/ visa/ master/ payme/ fps<br>收購二手音響, 代客寄賣, 交換, 送貨服務<br>