Boss Audio Systems owner manual Specifications, BR-900CD Digital Recording Studio

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)

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.

*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

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