Focusrite ISA 428 MKII
更新时间:2020-08-24 14:42:09 信息编号:4504245 发布者IP:106.37.106.238 浏览:225次![](http://img4.11467.com/u/23597875/197659524.jpg)
- 供应商
- 北京麦田中旺数码科技有限公司 商铺
- 认证
- 资质核验:已通过营业执照认证入驻顺企:第9年主体名称:北京麦田中旺数码科技有限公司组织机构代码:110105011639690
- 报价
- 人民币¥1.00元每15000
- 品牌
- Focusrite ISA 428 MKII
- 型号
- Focusrite ISA 428 MKII
- 11
- 22
- 关键词
- Focusrite ISA 428 MKII,Focusrite
- 所在地
- 北京市朝阳区百子湾路16号百子园5号楼A单元707室
- 手机号
- 18600607968
- 项目经理
- 刘先生 请说明来自顺企网,优惠更多
产品详细介绍
tel; 项目经理:博乐
供应销售focusrite全线产品! 4通道话放!
the focusrite isa428 mkii provides four of focusrite’s
prestigious transformer based microphone preamps. it features
the same classic circuitry and renowned audio found in the
original at a new level of affordability. with switchable
input impedance, direct instrument inputs and an optional eight
channels of high analogue to digital conversion, the isa428
mkii creates the perfect front end for the discerning recording
professional.
first introduced in 1985, the isa microphone preamp holds a
reputation for outstanding transparency along with subtle warmth
contributed by transformer core saturation. the addition of a
variable impedance circuit allows isa users to perfectly match the
preamp with any microphone, or to use different settings creatively
to shape the sound of the microphone. unchanged for decades,
the isa microphone preamp topology offers incredible clarity and
the signature focusrite sound that makes it the top choice among
many audio professionals today.
the optional class-leading isa828 eight-channel analogue to digital
converter is also compatible with the isa428 mkii. along with the
four mic preamp inputs, four additional inputs allow you to route
other line signals through the converter. high
burr-brown pro audio amplifiers and flagship pcm4220 a-d converter
chips seated within focusrite custom analogue circuitry deliver
unparalleled performance. specifications include a dynamic
range of 122db and jitter performance below 250 picoseconds.
the card can be retrofitted at any time. thanks to its
convenient 25-pin d-type connector, it integrates seamlessly with
pro tools hd, as well as other digital workstations and mixing
desks.
four instrument inputs, instantly accessible on the front panel,
allow quick and easy connection without the need for a separate di
box. extra processing can be placed between preamp and
conversion via the units dedicated insert points, featured on every
channel. finally, accurate six-segment led metering is
designed to catch even the fastest transients on every channel.
over 25 years, focusrite has earned a reputation for bringing
superb audio and engineering excellence to an array of
audio professionals. whether you’re looking to preserve the
sound of your classic microphones, or searching for the perfect
front end for your digital studio, the isa428 mkii brings legendary
tools to your studio at an exceptional new price.
features:
•four isa-series transformer-based pre-amps
over the past three decades, isa mic preamps have contributed to
many of the world’s most significant albums.
•eight channel optional a/d converter with 122db dynamic
range
the same cutting-edge analogue to digital converter card used in
the isa828. four additional adc inputs allow eight channels
of high conversion.
•switchable impedance
ideal for mic matching or extended microphone
creativity. settings include the ‘vintage isa110’ setting,
providing the original focusrite signature sound.
•four front panel instrument inputs
instant access on the front fascia - no separate di box
re
•dedicated analogue insert points
switchable insert points are featured on every channel,
allowing routing (between pre-amp and output) to additional
external processing.
•variable high pass focusrite filter
provided on every channel, this is the same filter as
featured on the original isa110 and the legendary focusrite forte
console.
•accurate led meters for every channel
clear metering designed to catch even the fastest and most
elusive of transients.
mic inputs
•frequency response at minimum gain (0db): -0.35db at 20hz and –3db
at 122khz
• frequency response at maximum gain (60db): –2.5db at 20hz
and –3db 103khz
•gain range: 0db to +60db in 10db steps, plus 0db to +20db
continuously variable trim
•maximum headroom: +7.4dbu
• thd+n: 0.0009% (measured at 1khz -20dbu input signal, at
30db gain setting, with a 20hz/22khz bandpass filter)
• noise ein: -126db (measured at 60db of gain with 150ω
termination and 20hz/22khz bandpass filter)
•noise at main output with unity gain: -98dbu (measured with a
20hz/22khz bandpass filter)
•snr: 123db (relative to max output 25dbu)
•snr: 120db (relative to 0dbfs (+22dbu)
•cmrr: 88db.
• input impedance, variable: 600ω, 1400ω, 2400ω, 6800ω
line inputs
•frequency response at unity gain (0db): -0.3db at 20hz and –3db at
94khz
• gain range: -20db to +10db in 10db steps, plus 0db to +20db
continuously variable trim
•maximum headroom: +25.4dbu
• thd+n: 0.002% (measured with +4dbu input signal, 0db gain
setting, with a 20hz/22khz bandpass filter)
•noise at main output with unity gain: -91dbu (measured with
a 20hz/22khz bandpass filter)
•snr: 116db (relative to max output 25dbu)
•snr: 113db (relative to 0dbfs +22dbu). input impedance: 10kω
instrument inputs
• frequency response at +10db gain: -0.2db at 20hz and 0db at
200khz
• frequency response at +40db gain: -3db at 20hz and –3db at
38.4khz
• gain range: +10db to +40db continuously variable
•maximum headroom: +11.5dbu
• thd+n: 0.006% (measured with –20dbu input signal, at
minimum gain (+10db), with a 20hz/22khz bandpass filter)
•noise at main output with minimum gain (+10db): -95dbu (measured
with a 20hz/22khz bandpass filter)
•input impedance = >1m
high pass filter
•roll off = 18db per octave 3 pole filter
•frequency range: 16hz to 420hz (continuously variable,
measured at the 3db down point)
meters
6 led meter is calibrated 0dbfs = +22dbu (the maximum level which
can be correctly converted by the optional internal a/d converter
before overload occurs). the meter calibration points are as
follows:
•meter panel calibration value in dbfs / e dbu
value
•0dbfs / +22dbu • -2dbfs / +20dbu
•-6dbfs / +16dbu • -12dbfs / +10dbu
•-18dbfs / +4dbu • -42dbfs / -20dbu
front and rear connectivity analogue channel inputs (inputs
1-4)
•4 instrument 1⁄4” ts jack inputs on front panel
•4 microphone xlr inputs on rear panel
• 4 line 1⁄4” trs jacks on rear panel
• 4 insert return 1⁄4” trs jacks on rear panel
•4 adc xlr inputs on rear panel analogue audio outputs (outputs
1-4)
• 4 line xlr outputs on rear panel • 4 insert send 1⁄4” trs
jacks on rear panel
other i/o
•iec power input connector 100vac – 240vac
front panel indicators
•8 output meters, 6 segment
• 4 30-60 mic gain range selection indicator
• 4 +48v phantom power indicator
•4 phase indicator
• 4 insert in indicator
•4 filter in indicator
• 4 input selection indicators (mic, line, inst)
• 4 z in microphone input impedance selection indicators (low,
isa110, med, high) clock select indicators (44.1, 48, 88.2, 96,
176.4, 192)
• ext clock indicators (lock, word clock, 256x)
weight
•12.2lbs
dimensions (w x h x d)
• 480mm (w) x 88mm (h) x 280mm (d) 19" (w) x 3.5" (h) x 11" (d)
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