.對應於高分辨率的聲源的再現
.採用兩路混合動力技術
.可拆卸的MMCX端子耳機線
.舒適耳掛型耳機線
由線材起家,ALO在音響的生意近年越做越大,耳擴方面也有不錯的成績。便攜耳擴的系列繼The National、The Continental後,繼續以地域來命名,新機稱作The International,同時擁有DAC及耳擴功能。機身同樣走輕巧路線,擁有USB DAC,最高對應24bit/96kHz,芯片用上Cirrus Logic CS4398,模擬方面對應3.5mm Line-in及4針平衡輸入,輸出亦同樣備有方型4芯平衡輸出及3.5mm耳機輸出。平衡線路方面用上Burr Brown DRV134作放大處理,輸出作面備有3段Gain設定。耳擴在充電後可使用14-16小時,如果連同DAC功能使用,續航時間為8-10小時,擁有不俗的續航力。
解碼晶片採用CS4398, 支持24/96
– Driver Type / Balance
– Impedance / 43ohm@1kHz
– Sensitivity / 106dB SPL/mW
– Maximun power input / 3mW
– Maximum power imput / 1800mW
– Frequency response / 4-20,000Hz
A modern portable amplifier with a classic circuit design. The National+ is an Opamp-less design; using 10 matched pairs of triodes in a discrete component layout. This approach to amplification delivers a robust sonic presentation that compliments a wide variety of musical styles and tastes.
The National+ housing is CNC’d from a single block of aluminum, providing exceptional protection for ‘on the go’ applications. Sized at just 3.38”x1.8”x.75”, its diminutive footprint conceals a versatile performer. Capable of pairing with sensitive earphones when in ‘low gain’ it is also capable of driving planar magnetic headphones while in its ‘high gain’ setting.
The easy to use National+ features a 3.5mm single-ended input and output. This offers a simple solution to amplify your portable high resolution digital audio player or the sensitive low level signal from your favorite DAC. Its output provides 3 gain stages to provide the perfect match for an audiophile’s earphones and/or headphones.
Carrying case, USB cable for charging and ALO audio amp straps included with The National+.
Technical Specs
AMPLIFIER PERFORMANCE
Frequency Response +/- 0.1 dB (20Hz-20kHz) THD+N (20-20kHz, 150 Ω) 0.0015% THD+N (20-20kHz, 32 Ω) 0.0045% Noise -105 dBu Crosstalk @ 150 Ω -67 dB Inter-channel Phase @ 1kHz +/- 0.01° Channel Balance +/- 0.55 dB, all volume positions Max Output @ 600Ω 4.146 VRMS Max Output @ 150Ω 3.580 VRMS Max Output @ 32Ω 1.182 VRMS Power Supply 14.0 Vpp Output Impedance 0.62 Ω Battery Run Time 6-8 Hours* Charge Time 2-4 Hours*
FEATURE CHARACTERISTICS
Digital Stepped Attenuation 63 steps + mute Dual Gain 2.3x and 6.5x Bass Boost Off / Med / High Low Battery Indication @ 20 Minutes Thin Film Resistors 0.1% Tolerance Battery 1200mAh, 3.7V Li-Ion
CONNECTIVITY
Analog Input 3.5mm Digital Input USB Output 3.5mm Charging USB
DAC PERFORMANCE
Frequency Response +/- 0.14 dB THD+N 100 Hz 0.0014% THD+N 20 Hz 0.0015% THD+N 10 kHz 0.0025% IMD CCIF 19/20 Khz 0.0015% Noise A-Weighted -103 dBu Dynamic Range > 109 dB A-Weighted Linearity Error -90 dBFS 24/96 0.2 dB Crosstalk -10dBFS -80 dB Sum of Jitter Components @ 11025 Hz -112 dB PCB Stackup 4 Layers Maximum Output Line Out 100K 2.0 VRMS
DATA SUPPORT
Audio Formats 16/44, 16/48, 16/88, 16/96, 24/44, 24/48, 24/88, 24/96 Interface USB, Audio Class 1 Native Driver OS Support Windows XP & Later, OS X x86, Linux, iOS 7 DAC
COMPATIBILITY
iPhone YES: Requires iOS7+ and CCK iPad YES: Requires CCK Windows YES Linux YES Android YES: Requires v5.0+ and OTG Cable OS X YES
DIMENSIONS
Case Dimensions (mm) 99.5 x 61.5 x 14.0 Weight 4.2oz
IL1000 Specifications:
Units : Zinc Alloy Die Casting
Driver : Φ8mm IDP Dynamic Driver
Impedance : 16ohm
Sensitivity : 105dB/mW
Cable Type : CM 2-pin Detachable Type
Cable Info : OCC 6N 4core Litz Silver Plated Cable