Boulder 3060 Stereo Power Amplifier

There are projects like the Boulder 3060 Stereo Amplifier that contradict conventions and redefine striving for perfection. Attempts are made to push the boundaries of what is thought to be possible. These projects involve countless hours of research, experimentation, and hard work, with each step along the way creating small improvements. When accumulated, each of these small improvements mean big leaps forward. They embody the concept of what it takes to be the very best and the results are breathtaking.

Just like the Boulder 3060.

Features

Production of the 3060 is extremely limited and every unit is built to order

All assemblies are completely designed, manufactured and hand-assembled at our facility in Louisville, Colorado

900W per channel power output into any loudspeaker load

Each amplifier is shipped with a machined aluminum and polished stainless steel base that is cut to match the footprint and casework angles of the amplifier

Contains four (two per channel) of Boulder's highest performing gain stage, the 99H

Bias operation is Class-A to full rated output power and managed with an analog circuit that minimizes heat and power consumption

60 bipolar output transistors per channel mean unmatched control of any loudspeaker system

48 massive filter capacitors are part of an ultra-responsive, low-impedance power supply

Five power transformers, housed in machined cases and potted to absolutely eliminate any noise, vibration or hum

Specifications

PEAK POWER, 8 OHMS

1000W

PEAK POWER, 4 OHMS

1650W

PEAK POWER, 2 OHMS

2000W

THD, 8 OHMS, 900W

20-2 kHz: 0.0006%, 20 kHz: 0.0025%

THD, 4 OHMS, 900W

20-2 kHz: 0.0008%, 20 kHz: 0.0030%

THD, 2 OHMS, 900W

20-2 kHz: 0.0012%, 20 kHz: 0.0045%

EQUIVALENT INPUT NOISE (EIN), 20KHZ BW

1.5 μV

MAGNITUDE RESPONSE, 20 TO 20KHZ

+0.00, -0.04 dB

MAGNITUDE RESPONSE, -3DB AT

0.015 Hz, 200 kHz

VOLTAGE GAIN

26dB

INPUT IMPEDANCE

Balanced: 200KΩ,

Unbalanced: 100KΩ

COMMON MODE REJECTION (BALANCED ONLY)

60 Hz: 90dB,

10 kHz: 70dB

INPUTS

3-pin balanced (XLR)

OUTPUT CONNECTORS

2 sets of 6 mm / .250 inch wingscrews

POWER REQUIREMENTS

220-240 VAC

50-60 Hz, 300W nominal, 6000W at maximum output

WEIGHT

Amplifier: 355 lbs. (161 kg),

Base: 86 lbs. (39 kg),

Shipping: 563 lbs. (256 kg)

AMPLIFIER TOPOLOGY

Pure Class A to full rated output