Drawing from 7 decades of JBL Professional engineering, the 104-BT compact reference monitors are part of their 1 Series line, bringing forth the truest, most accurate sound in their class. They're ideal for a range of portable reference monitoring applications and include Bluetooth® streaming to provide users with the flexibility to stream both wired and wireless sound into high-quality studio monitors.Available in your choice of either Black or White versions, their sleek, elegant design, plus compact form factor make a stunning statement in any studio while conserving valuable work space. Count on the JBL 104-BT Monitors to deliver an accurate, reliable sonic reference as well as a truly enjoyable listening experience.ApplicationsRecording musicians and producers • Podcasters and vloggers • Professional audio engineers • Others seeking an accurate portable reference combined with Bluetooth streamingIncludes2x 104-BT monitor (one Master, one Extension)1x Extension monitor speaker wire (2-conductor, 2m)1x 3.5mm to RCA audio cable1x Regional power cable1x Quick setup guideFeaturesProprietary coaxial driver combines 4.5" (118mm) woofer and 0.75" (19 mm) soft-dome tweeter for transparency and wide sweet spotReference mixes via Bluetooth 5.0 streamingIntegrated 60 W Class D power amplifier; 30 W distributed to each speakerAcoustically optimized for desktop placementMolded ABS cabinet with contoured low-frequency portThree sets of inputs allow connection with professional equipment, personal music players and consumer devicesMaster monitor includes electronics for the extension monitor, minimizing wiring and clutterFront-panel input control selects Bluetooth, Aux, RCA, TRS or combines all inputsFront-panel volume control and headphone jack with speaker mute featureAvailable in your choice of black or whiteSpecificationsSystem Input Type: Bluetooth, ⅛" Aux, RCA, ¼" TRS balancedInput Selection Options: Bluetooth, Aux, RCA, TRS, AllSystem Output Type: ⅛" stereo headphone with auto speaker muteBluetooth Version: 5.0LF Transducer: 4.5" (118mm)HF Transducer: 0.75" (19mm), soft domeEnclosure Type: PortedCrossover: 1725 Hz, 1st orderPower Amp: 60 W (30 W each speaker), Class DSensitivity: 87 dB SPL @ 1 m with -10 dBV Aux In (Volume = Max)Maximum Continuous SPL: 89 dB, Measured using full-bandwidth pink noise, C-WeightedSystem Peak SPL: 102 dB (pink noise, 12 dB crest factor), Measured using full-bandwidth pink noise, C-WeightedMaximum SPL, Momentary Peak: 104 dB, Measured using full-bandwidth pink noise, C-WeightedMaximum Peak Input Level, (-10 dBV / +4 dBu): +6 dBV / +20.3 dBuFrequency Range (-3 dB SPL): 88 Hz – 20 kHz, Measured in half-spaceFrequency Range (-10 dB SPL): 60 Hz – 20 kHz, Measured in half-spaceSystem Rated Impedance: 8 ΩMinimum Impedance: 7.8 Ω @ 260 HzCabinet Tuning Frequency: 72 HzSystem Power Handling: 30 W x 2 @ 100 hours, IEC/SMSSystem Distortion Criteria:< 10% THD at maximum output with full compressor / limiter engagementElectrical Distortion Criteria:< 0.2%THD @ 1 kHz, 2.83 VRMS output;< 1% THD @ 1 kHz, full rated outputSignal To Noise Ratio: 75 dBA (A-Weighted), 70 dBr (unweighted), relative to 2.83 VRMS output on HFCoverage (Horizontal x Vertical): 120º x 60ºSystem Polarity: EIAAcoustic Test Specification: ATS# 1000340443AC Input Voltage: 100 – 240 VAC (±10%), 50 / 60 HzCurrent Draw: 85 WattsElectrical Current Draw (W) Idle: 100 / 240 VAC: 3.52 / 3.70Electrical Current Draw (W) Max power: 100 / 240 VAC: 80 / 80Electrical Current Draw (W) Low-power standby mode: 100 / 240 VAC: 0.34 / 0.46Enclosure Material: ABS with metal grilleEnclosure Finish:Black: Matte black acrylic paintWhite: Matte white acrylic paintDimensions (H x W x D): 9.72" x 6.02" x 4.88" (247 x 153 x 124mm), note: depth measured without power cord and audio connectors (typical power cord = 2", typical audio connector = 2.5")Net Weight:Master Monitor: 4.54 lbs. (2.06 kg)Extension Monitor: 3.81 lbs. (1.73 kg) JBL 104-BT Desktop Reference Monitors + Bluetooth, Black or White Pair - Black.