Boss Audio Systems BR-900CD - Manual (Page 220)

220
Specifications
BR-900CD: Digital Recording Studio
● Tracks
Track: 8
V-Track: 64 (8 V-Tracks per each Track)
* Up to 2 tracks can be recorded simultaneously, and up to 8
tracks can be played back simultaneously.
● Useful Capacity
CompactFlash: 32 M–1 G bytes
● Data Type
HiFi (MT2)
STANDARD (LV1)
LONG (LV2)
● Signal Processing
AD Conversion: 24 bit, ∆∑ Modulation + AF-AD (Guitar/Bass)
24 bit, ∆∑ Modulation + AF-AD (Mic 1/2)
24 bit, ∆∑ Modulation (Line)
24 bit, ∆∑ Modulation (Simul)
DA Conversion: 24 bit, ∆∑ Modulation
Internal Processing: 24 bit (digital mixer section)
* AF method (Adaptive Focus method)
Adaptive Focus is a unique Roland/BOSS technology that
allows the signal noise (S/N) ratios of AD and DA converters
to be vastly improved.
● Sample Rate
44.1 kHz
● Frequency Response
20 Hz to 20 kHz (+1/-3 dBu)
● Recording Time (conversion in one track)
* The above-listed recording times are approximate. Times may
be slightly shorter depending on the number of songs that were
created.
* The above number is the total for all the tracks that are used. If
each of the eight tracks contain an equal amount of data, the
length of the resulting song will be approximately 1/8 of the
above.
● Nominal Input Level (Variable)
GUITAR/BASS jack: -20 dBu
MIC (TRS balanced/XLR) jack: -40 dBu
LINE IN jack: -10 dBu
● Input Impedance
GUITAR/BASS jack: 1 M Ω
MIC 1/2 jack: 1.5 k
Ω (HOT-COLD)
(TRS balanced/XLR) 1.0 k Ω (HOT-GND, COLD-GND)
LINE IN jack: 10 k Ω
● Nominal Output Level
LINE OUT jack: -10 dBu
● Output Impedance
LINE OUT jack: 2 k Ω
Headphone jack: 140 Ω
● Recommended Load Impedance
LINE OUT jack: 20 k Ω or greater
Headphone jack: 32–100 Ω
● Residual Noise Level
LINE OUT jack: -85 dBu or less
(INPUT SELECT: GUITAR/BASS/MIC2, input terminated with
1 k
Ω, INPUT SENS: CENTER, IHF-A, typ., EFFECT: OFF)
* 0 dBu = 0.775 Vrms
● Interface
USB Connector
DIGITAL OUT: S/PDIF 16–24 bit (Optical type)
● Display
16 Characters x 2 Lines + Approx. 100 icons (Backlit LCD)
● Connectors
GUITAR/BASS jack (1/4 inch phone type)
MIC 1 jacks (XLR balanced type, TRS balanced 1/4 inch
phone type)
MIC 2 jacks (XLR balanced type)
LINE IN jack (RCA Phono type)
LINE OUT jack (RCA Phono type)
DIGITAL OUT connector (Optical type)
FOOT SW/EXP PEDAL jack (1/4 inch phone type)
PHONES jack (Stereo 1/4 inch phone type)
MIDI OUT connector
USB connector
Capacity
Data type
HiFi (MT2) STD (LV1) LONG (LV2)
32 MB 16 min. 19 min. 24 min.
64 MB 32 min. 39 min. 49 min.
128 MB 65 min. 78 min. 98 min.
256 MB 130 min. 156 min. 196 min.
512 MB 260 min. 312 min. 392 min.
1 GB 520 min. 624 min. 784 min.