Jeff Rowland Design Group

Model 302 Power Amplifier

Output Power: Continuous RMS watts, both channels driven @ 8 ohms @ 4 ohms	300 watts. 500 watts.
Power Bandwidth:	5 Hz - 60 kHz, -3 dB.
Peak Output Current:	>45 Amps.
Dynamic Range:	117 dBA.
THD + Noise, 0.1W-500W/4 ohm:	<.05%, typically .006 @ 1kHz.
CCIF Intermodulation Distortion, 19/20 kHz:	<.002%.
Damping Factor @ 1kHz:	275
Overall Gain: (Balanced or Unbalanced)	Selectable Internal Jumper, 26 or 32 dB.
Input Impedance:	40k ohms
Common Mode Rejection Ratio:	>90dB, 20 Hz - 20 kHz
Absolute Phase:	Non-inverting, Pin 3 Positive
Inputs:	2 x Balanced XLR 2 x Unbalanced RCA.
Outputs:	2 Pairs Parallel Binding Posts per Channel.
Power Consumption: Standby Switch OFF Standby Switch ON (idle) Maximum	45 watts 55 watts. 1200 watts.
Amplifier Weight:	95 lbs./43 kg.
Shipping Container Dimensions:	27” (L) x 21” (W) x 16” (H)/ 68 cm (L) x 54 cm (W) x 41 cm.
Shipping Weight:	103 lbs./47 kg.

Battery Power Supplies

	BPS-8	BPS-9 (1 required per channel)
Battery Type	6 volt, 7.2 amp-hours	6 volt, 12 amp-hours
Battery Quantity	20	14 (per channel)
Charge Management	microprocessor-controlled, current-limited, over-voltage and under-voltage protection, both models
Play Time	no limit	no limit
Battery Life	five to eight years	five to eight years
Operating Modes	AC-only/battery with constant charging, both models
Dimensions	17.5 W x 22.0 D x 11.4 H (both models)
Weight	125 lbs	130 lbs (per channel)


	BPS-2	BPS-6 (1 required per channel)
Battery Type	6 volt, 12 amp-hours	6 volt, 7.2 amp-hours
Battery Quantity	6	8 (per channel)
Charge Management	microprocessor-controlled, current-limited, over-voltage and under-voltage protection, both models
Play Time	no limit	no limit
Battery Life	five to eight years	five to eight years
Operating Modes	AC-only/battery with constant charging, both models
Dimensions	17.5 W x 14.25 D x 5.25 H (both models)
Weight	48 lbs	48 lbs (per channel)

Model MC6 Specs

Output Power:
@ 8 ohms
@ 4 ohms

1 CH	2 CH	6 CH
330	250	150
600	400	250

Input Impedance:

36k per channel

Power Bandwidth :

0.1 Hz to 160 kHz, -3 dB

Common Mode Rejection Ratio:

>75 dB, 20 Hz to 20 kHz

Slew Rate:

25 volts per microsecond

Inputs:

User selectable
Unbalanced 6 RCA
Balanced 6 XLR

Output Current:

60 amps peak, Channels 1 and 6
30 amps peak, Channels 2 and 5

Outputs:

6 pair binding posts

THD and Noise:

Less than 0.01% at rated power

Power Consumption:

40 watts standby;220 watts idle;
1200 watts maximum

Damping Factor:

Greater than 60, Channels 1 and 6
Greater than 40, Channels 2-5

Amplifier Weight:

124 lbs. (56 kg)

Overall Gain & Sensitivity:

(1 watt, 8 ohms) 26 dB, 141 mV

Amplifier Dimensions:

17.5" x 22" x 11.4"

Model 10 Specs
Specs refer to the latest iteration of the product.

Power Output	150 watts/ch, @ 8 ohms 275 watts/ch, @ 4 ohms
Inputs	Balanced input via XLR, unbalanced input via RCA.
Gain	26 dB standard 32 dB selectable via internal jumpers
Weight	30 lbs/13.4 kg
Dimensions	17. 5"W X 11.7"D X 3.1"H 44.5cm (w) x 33.5cm (d) x 6.5cm (h).
Power Supply	Fully regulated outputs, 85-140 or 180-260 VAC, 50/60 Hz.
Power Supply Weight	32 lbs/14.3kg

Model 12 Specs
Specs refer to the latest iteration of the product.

Power Output	200 watts/ch, @ 8 ohms 350 watts/ch, @ 4 ohms
Inputs	Balanced input via XLR, unbalanced input via RCA.
Gain	26 dB standard 32 dB selectable via internal jumpers
Weight	30 lbs. (13. 5 Kg)
Dimensions	17.5"W X 11.7"D X 3.1"H 44.5cm (w) x 33.5cm (d) x 6.5cm (h).
Power Supply	Fully Regulated Outputs with Power Factor Correction
Power Supply Weight	32 lbs. (14. 5 Kg)

Model 8ti Specs
Specs refer to the latest iteration of the product.

OUTPUT POWER	CONTINUOUS RMS WATTS
@ 8 OHMS @ 4 OHMS	250 WATTS 400 WATTS
BANDWIDTH	0.1 Hz to 160 kHz, -3 dB
SLEW RATE	30 volts per microsecond
THD AND NOISE	less than 0.1% at rated power
DAMPING FACTOR	greater than 100, 20 Hz to 20 kHz, 8 ohms
OUTPUT CURRENT	50 amps continuous, 100 amps peak
OVERALL GAIN & SENSITIVITY (1 WATT, 8 OHMS)	user selectable on back panel 26 dB or 32 dB; 141 mV or 71 mV
INPUT IMPEDANCE BALANCED UNBALANCED	user selectable on back panel 36k or 600 ohms 36k or 600 ohms
COMMON MODE REJECTION RATIO	greater than 60 dB, 20 Hz to 20 kHz
ABSOLUTE PHASE	user selectable on back panel normal or phase-inverted
INPUT MUTE	user selectable on back panel
POWER CONSUMPTION	50 watts standby; 500 watts operating, idle; 1200 watts maximum
INPUTS BALANCED UNBALANCED	user selectable on back panel 1 per channel (XLR) 1 per channel (RCA)
OUTPUTS	2 pair binding posts per channel
DIMENSIONS	17.5 in (W) x 22.0 in (D) x 11.4 in (H) 44.5 cm (W) x 56.0 cm (D) x 28.5 cm (H)
WEIGHT	124 lbs. (56 Kg)

Model 9ti Specs
Specs refer to the latest iteration of the product.

OUTPUT POWER	CONTINUOUS RMS WATTS
@ 8 OHMS @ 4 OHMS	350 WATTS 700 WATTS
BANDWIDTH	0.1 Hz to 160 kHz, -3 dB
SLEW RATE	30 volts per microsecond
THD AND NOISE	less than 0.06% at rated power
DAMPING FACTOR	greater than 300, 20 Hz to 20 kHz, 8 ohms
OUTPUT CURRENT	70 amps continuous, 140 amps peak
OVERALL GAIN & SENSITIVITY (1 WATT, 8 OHMS)	user selectable on back panel 26 dB or 32 dB; 141 mV or 71 mV
INPUT IMPEDANCE BALANCED UNBALANCED	user selectable on back panel 36k or 600 ohms 36k or 600 ohms
COMMON MODE REJECTION RATIO	greater than 60 dB, 20 Hz to 20 kHz
ABSOLUTE PHASE	user selectable on back panel normal or phase-inverted
INPUT MUTE	user selectable on back panel
POWER CONSUMPTION (PER CHANNEL)	50 watts standby; 500 watts operating, idle; 1200 watts maximum
INPUTS BALANCED UNBALANCED	user selectable on back panel 2 per channel (XLR) 2 per channel (RCA)
OUTPUTS	2 pair binding posts per channel
DIMENSIONS POWER SUPPLY AMPLIFIER	17.5 in (W) x 22.0 in (D) x 11.4 in (H) 44.5 cm (W) x 56.0 cm (D) x 28.5 cm (H) 17.5 in (W) x 22.0 in (D) x 11.4 in (H) 44.5 cm (W) x 56.0 cm (D) x 28.5 cm (H)
WEIGHT (PER CHANNEL) POWER SUPPLY AMPLIFIER	128 lbs. (58 Kg) 92 lbs. (42 Kg)

Model 6 & 2 Specs
Specs refer to the latest iteration of the product.

	MODEL 6	MODEL 2
OUTPUT POWER	CONTINUOUS RMS WATTS
@ 8 OHMS @ 4 OHMS	150 WATTS 250 WATTS	75 WATTS 150 WATTS
POWER BANDWIDTH	0.1 Hz to 160 kHz, -3 dB, both models
SLEW RATE	30 volts per microsecond, both models
THD AND NOISE	less than 0.05% at rated power, both models
DAMPING FACTOR	greater than 300, 20 Hz to 20 kHz, 8 ohms, both models
OUTPUT CURRENT	35 amps continuous, 50 amps peak	20 amps continuous, 35 amps peak
OVERALL GAIN & SENSITIVITY (1 WATT, 8 OHMS)	user selectable on back panel 26 dB or 32 dB; 141 mV or 71 mV
INPUT IMPEDANCE	user selectable on back panel
BALANCED UNBALANCED	18k or 600 ohms 18k or 600 ohms	36k or 600 ohms 36k or 600 ohms
COMMON MODE REJECTION RATIO	greater than 60 dB, 20 Hz to 20 kHz, both models
ABSOLUTE PHASE	non-inverting, both models
POWER CONSUMPTION	25 watts standby; 225 watts operating, idle;
	500 watts maximum	400 watts maximum
INPUTS BALANCED UNBALANCED	1 per channel (XLR), both models 1 pair XLR to RCA adapters included, both models
OUTPUTS	1 pair binding posts per channel, both models
DIMENSIONS	17.5 in (W) x 14.25 in (D) x 5.25 in (H) 44.5 cm (W) x 36.2 cm (D) x 13.3 cm (H)
WEIGHT	45 lbs. (20.5 Kg) (per channel)	47 lbs. (21.5 Kg)

Model 1 Specs
Specs refer to the latest iteration of the product.

Output power	60 watts RMS continuous, 8 ohms 120 watts RMS continuous, 4 ohms 215 watts RMS continuous, 2 ohms
Power Bandwidth	0.3 Hz to 300 kHz, -3 dB
Slew Rate	70 volts per microsecond
THD and Noise	Less than .025%, 1 kHz, 8 ohms, 20 watts Less than .035%, 1 kHz, 8 ohms, 60 watts
Damping Factor	Greater than 200, 20 Hz to 20 kHz, 8 ohms Greater than 85 100 kHz, 8 ohms
Output Current	22 amps peak, continuous 55 amps peak, 0.1 ohm, 20 msec, 1 kHz
Overall Gain	Selectable: 20, 26, 29.5, 32 dB
Sensitivity	136 mV, 1 watt, 8 ohms
Input Impedance	Selectable: 100k, 20k, 600 ohms
Common Mode Rejection Ratio	Greater than 90 dB
Bridged Mono Output Power	240 watts RMS continuous, 8 ohms 360 watts RMS continuous, 4 ohms 500 watts RMS continuous, 2 ohms
Power Requirements	100V-240V

Model 3 Specs
Specs refer to the latest iteration of the product.

Output power	100 watts RMS continuous, 8 ohms 200 watts RMS continuous, 4 ohms 320 watts RMS continuous, 2 ohms
Power Bandwidth	0.15 Hz to 175 kHz, -3 dB
Slew Rate	45 volts per microsecond
THD and Noise	Less than .03%, 1 kHz, 8 ohms, 20 watts Less than .08%, 1 kHz, 8 ohms, 100 watts
Damping Factor	Greater than 120, 20 Hz to 20 kHz, 8 ohms Greater than 80, 100 kHz, 8 ohms
Output Current	32 amps peak, continuous 80 amps peak, 0.1 ohm, 20 msec, 1 kHz
Overall Gain	Selectable: 20, 26, 29.5, 32 dB
Sensitivity	136 mV, 1 watt, 8 ohms
Input Impedance	Selectable: 100k, 20k, 600 ohms
Power Requirements	100V-240V
Dimensions	19 in. W x 8.75 in. H x 24 in. D 48 cm W x 22 cm H x 61 cm D

Model 5 Specs
Specs refer to the latest iteration of the product.

Output power	150 watts RMS continuous, 8 ohms 300 watts RMS continuous, 4 ohms 475 watts RMS continuous, 2 ohms
Power Bandwidth	0.15 Hz to 250 kHz, -3 dB
Slew Rate	75 volts per microsecond
THD and Noise	Less than .03%, 1 kHz, 8 ohms, 20 watts Less than .075%, 1 kHz, 8 ohms, 60 watts
Damping Factor	Greater than 175, 20 Hz to 20 kHz, 8 ohms Greater than 60, 100 kHz, 8 ohms
Output Current	40 amps peak, continuous 90 amps peak, 0.1 ohm, 20 msec, 1 kHz
Overall Gain	Selectable: 20, 26, 29.5, 32 dB
Sensitivity	36 mV, 1 watt, 8 ohms
Input Impedance	Selectable: 100k, 20k, 600 ohms
Common Mode Rejection Ratio	Greater than 90 dB
Bridged Mono Output Power	550 watts RMS continuous, 8 ohms 800 watts RMS continuous, 4 ohms 1000 watts RMS continuous, 2 ohms
Power Requirements	100V-240V

Model 7 Specs
Specs refer to the latest iteration of the product.

Output power	350 watts RMS continuous, 8 ohms 700 watts RMS continuous, 4 ohms 1100 watts RMS continuous, 2 ohms
Power Bandwidth	0.15 Hz to 175 kHz, -3 dB
Slew Rate	50 volts per microsecond
THD and Noise	Less than .015%, 1 kHz, 8 ohms, 20 watts Less than .045%, 1 kHz, 8 ohms, 100 watts Less than .06%, 1 kHz, 8 ohms, 200 watts
Damping Factor	Greater than 300, 20 Hz to 20 kHz, 8 ohms Greater than 90, 100 kHz, 8 ohms
Output Current	50 amps peak, continuous 150 amps peak, 0.1 ohm, 20 msec, 1 kHz
Overall Gain	26.4 dB
Sensitivity	136 mV, 1 watt, 8 ohms
Input Impedance	Selectable: 100k, 20k, 600 ohms
Power Requirements	100V-240V
Dimensions	19 in. W x 8.75 in. H x 24 in. D 48 cm W x 22 cm H x 61 cm D

Cadence Specs Specs refer to the latest iteration of the product.
Overall Gain @ 1 kHz: Lo Gain Hi Gain	64 dB 74 dB Other gain structures available from factory	Cartridge Loading Equivalent Resistance: Lo Gain Lo Impedance Lo Gain Hi Impedance Hi Gain Lo Impedance Hi Gain Hi Impedance	250 ohms 400 ohms 30 ohms 50 ohms
RIAA Accuracy:	+/- 0.03 dB, 20 Hz to 20kHz	Power Requirements:	+/- 12-14 volts dc, 40 milliamps
Frequency Response:	-3 dB @ 0.5 Hz and 180 kHz	Input/Output Connections: Balanced Unbalanced	1 per channel (XLR) 1 pair XLR to RCA adapters included
Common Mode Rejection Ratio:	130 dB (@60 Hz)	Dimensions:	17.5" x 5.1" x 3.15"
Total Harmonic Distortion:	< 0.015, 20 Hz to 20 kHz, 5 V output level	Weight:	27 lbs. (12 Kg)
Output Noise (IEC A weighted): Lo Gain Hi Gain	< 59 microvolts < 60 microvolts
Because Jeff Rowland Design Group is constantly analyzing new design improvements, we reserve the right to change or modify product specifications without notice or obligation.

Concentra II Specs
Specs refer to the latest iteration of the product.

OUTPUT POWER	CONTINUOUS RMS WATTS
@ 8 OHMS @ 4 OHMS	150 WATTS 250 WATTS
BANDWIDTH	0.1 Hz to 160 kHz, -3 dB
SLEW RATE	30 volts per microsecond
THD AND NOISE	less than 0.01% at rated power
DAMPING FACTOR	>60, 20 Hz to 20 kHz
GAIN STRUCTURE:	14 dB Preamplifier section 26 dB Amplifier section
VOLUME CONTROL RANGE	99.5 dB
VOLUME CONTROL RESOLUTION	0.5 dB +/- 0.05 dB over entire range
INPUT IMPEDANCE	36 kohms Balanced or Unbalanced
COMMON MODE REJECTION RATIO	greater than 60 dB, 20 Hz to 20 kHz
POWER CONSUMPTION	150 watts idle; 550 watts maximum
INPUTS:	Balanced 3X XLR per channel Unbalanced 3X RCA per channel
OUTPUTS	1 pair 5-way binding posts per channel, 1 pair balanced pre-out via XLR, 1 pair unbalanced pre-out via RCA
DIMENSIONS	17.5 in (W) x 14.35 in (D) x 5.75 in (H) 44.5 cm (W) x 36.2 cm (D) x 14.6 cm (H)
WEIGHT	57 lbs. (23 Kg)

Coherence II Specs
Specs refer to the latest iteration of the product.

OVERALL GAIN	Adjustable for each input +/-20 dB relative to unity gain (0 dB) in 0.5 dB increments
INPUT IMPEDANCE	Adjustable for each input 18k or 600 ohms
OUTPUT IMPEDANCE	50 ohms
MAXIMUM INPUT LEVEL	13 volts RMS at 0 dB gain
MAXIMUM OUTPUT LEVEL	13 volts RMS (24 dBm)
OUTPUT NOISE LEVEL	12 microvolts, 20-20 kHz bandwidth, 0 dB gain
SIGNAL TO NOISE RATIO	Greater than 96 dB
CHANNEL SEPARATION	Greater than 110 dB, @ 20-20 kHz bandwidth
FREQUENCY RESPONSE	5 Hz-160 kHz, -3 dB
THD + NOISE	0.0016% 10 volt output, 600 ohm load
GAIN RANGE	63.5 dB, 127 equal increments
GAIN RESOLUTION	0.5 dB +/- 0.03 dB over entire range
CHANNEL BALANCE	+/- 0.03 dB throughout entire range
INPUTS	7 per channel (XLR) 1 per channel, home theater bypass mode (XLR) 1 pair XLR to RCA adapters included
OUTPUTS	2 main outputs per channel (XLR) 2 record outputs per channel (XLR) 1 pair XLR to RCA adapters included
DIMENSIONS	17.5 in (W) x 12.0 in (D) x 3.7 in (H) 44.5 cm (W) x 30.9 cm (D) x 9.40 cm (H)
WEIGHT	40 lbs. (18 kg)


POWER SUPPLY
POWER CONSUMPTION	40 watts maximum, 10 watts nominal
MAINS VOLTAGE	100V, 120V, 220V, 240V, 50/60 Hz
BATTERY COMPLEMENT	2 each 12 volt, 7.2 amp/hour user replaceable sealed, lead calcium, maintenance-free batteries
BATTERY SERVICE LIFE	5-8 years
AC UNASSISTED RUN TIME	14-18 hours based upon initial battery full charge
DIMENSIONS	17.5 in (W) x 12.0 in (D) x 3.7 in (H) 44.5 cm (W) x 30.9 cm (D) x 9.40 cm (H)
WEIGHT	43 lbs. (19.5 kg)

Consummate Specs
Specs refer to the latest iteration of the product.

Overall Gain	Selectable 6 dB, 12 dB, 18 dB or 20 dB
IHF Input Sensitivity For 500 mV Output	Selectable 250mV, 125mV, 63mV or 50mV
Main Outputs (per channel)	1 RCA Inverting, 1 RCA Non-inverting, 1 XLR balanced
Input Impedance Selectable:	Unbalanced 300, 10 k or 100 k ohms Balanced 600, 20 k or 200 k ohms
Frequency Response:	0.05 Hz to 200 kHz, -3 dB
IHF Signal to Noise (S/N) Ratio, A Wtd., Ref. 500 MV	88 dB
THD Distortion, Ref. 2.5 V RMS	<0.012%
Max Output Level	8VRMS
Output Impedance Selectable:	Unbalanced 150 ohms or 300 ohms Balanced 300 ohms or 600 ohms
Dimensions (including power supply)	15.0 in. W x 13.75 in. D x 5.50 in H (38cm W x35cm D x6.7cm H)
Weight (including power supply)	28 lbs., 12.8 kg

Consonance Specs
Specs refer to the latest iteration of the product.

Line Stage Gain	Selectable 6/16.4 dB
Phono Stage Gain	Selectable 42/60.2 dB
IHF Input Sensitivity For 500 MV Output	Phono: tape out 0.5 mV or 4.0 mV Line: main out 75 mV or 210 mV
RIAA Accuracy	20 Hz to 50 kHz ± 0.20 dB
Frequency Response: Phono Line	0.15 Hz to 220 kHz, -3 dB 0.08 Hz to 200 kHz, -3 dB
IHF Signal to Noise (S/N) Ratio, A Wtd., Ref. 500 MV Phono/Line	77 dB/87 dB
THD Distortion, Ref. 2.5 V RMS Phono/Line	<0.04%/<0.012%
Max Output Level Phono/Line	7.5 V RMS/7.5 V RMS
Dimensions	15 0 in. W x 13.75 in. D x 2.65 in H (38 cm W x 35 cm D x 6.7 cm H)
Weight	14 lbs., 6.4 kg

Coherence 1 Specs
Specs refer to the latest iteration of the product.

Inputs	Phono + 3 unbalanced line
Main outputs (per channel)	1 inverting, 1 non-inverting
Dimensions	12.5 in. W x 19 in. D x 3.75 in. H 31.8 cm W x 48.3 cm D x 9.5 cm H
Weight	29 lbs., 13 kg
Gain	60 dB
Frequency Response	0.15 Hz to 220 kHz, -3 dB
RIAA Accuracy	20 Hz to 20 kHz ± 0.15 dB; +0, -3 dB, 200 kHz
Input Impedance	User selectable: 0-200 ohms adjustable, 47 k ohm fixed or any value.
THD and Noise	< 0.025% @ 1 kHz, 0.7 V RMS output
Max Output Level	18 V RMS
Gain	19 dB
Frequency Response	0.06 Hz to 650 kHz, -3 dB
Input Impedance	10 k ohms
Output Impedance	300 ohms (single-ended output) 600 ohms (balanced output)
THD and Noise	< 0.010% @ 1 kHz, 3 V RMS output

Synergy Preamplifier
Specs refer to the latest iteration of the product.

Overall Gain :	Adjustable for each input +/-20 dB relative to unity gain (0 dB) in 0.5 dB increments	THD + Noise:	0.0012% 10 volt output, 600 ohm load
Gain Range:	63.5 dB, 127 equal increments	Input Impedance:	Adjustable for each input 36k or 600 ohms
Gain Resolution:	0.5 dB +/- 0.03 dB over entire range	Output Impedance:	Unbalanced 40 ohms, balanced 80 ohms
Channel Balance:	+/- 0.05 dB throughout entire range	Channel Separation:	>100 dB, @ 20-20 kHz bandwidth
Frequency Response:	5 Hz-160 kHz, -3 dB	Inputs:	5 per channel (XLR) 1 per channel bypass mode (XLR) 1 pair XLR to RCA adapters included
Maximum Input Level:	13 volts RMS at 0 dB gain	Outputs:	2 x Pair Balanced Line Level per channel 1 pair XLR to RCA adapters included
Maximum Output Level:	13 volts RMS (24 dBm)	Weight: Preamplifier Power Supply	24 lbs. (11 Kg) 7 lbs. (3 Kg)
Output Noise Level:	10 microvolts, 20-20kHz bandwidth, 0 dB gain	Dimensions: Preamplifier Power Supply	17.5" x 6.0" x 3.15" 17.5" x 4.8" x 1.5"