Give in to the Groove

Product details

About

The 1151 Mono Power Amplifiers give the quality and performance Boulder is renowned for, while being housed in a package that can be installed by one person and in a form factor perfect for conventional racks.

The 1151 is designed, machined, and assembled all under one roof in Boulder’s facility in Louisville, Colorado.

The heat sinks are machined from a solid aluminum billet, providing optimum heat dissipation. The feet have special constrained layer dampening material for vibration reduction.

Like the rest of the 1100 series, the front panel is derived from a topographical map of Flagstaff Mountain, less than 30 miles from Boulder’s facility. The attractive appearance is still conservative enough to work with any decor, assuring lasting satisfaction with your investment.

Under the top panel it is equally impressive. All the boards inside the 1151 are designed, assembled, and tested by Boulder. 

Boulder’s proven wide bandwidth, two-stage signal path allows the powerful output section to deliver more musical realism with Boulder’s Smart Current biasing circuitry.

Some loudspeakers can be challenging to drive, demanding very high power and control. The 1151 provides high amounts of current, making even the most difficult speaker perform to its fullest potential. 

The key to controlling a loudspeaker while remaining clear and transparent, regardless of the delicacy or complexity of the music, is the ability to deliver undistorted power from a noise- free background into a reactive load.

The 1151’s extremely low output impedance eases the speaker through even the most difficult passages of music. This guarantees that the 1151’s character will never change, regardless of which speaker you connect it to.

The 1151 accomplishes impressive neutrality with a combination of balanced inputs and outputs to reduce noise to vanishingly low levels.

Price is for a pair of monoblock

Specifications

Features
200W peak power per channel into 8 ohms, 350W peak power into 4 ohms, 450W peak power into 2 ohms

Space saving design is the same footprint (width and depth) as the 1110 Preamplifier and lower power output allows the use of a standard power cord

Smaller carton packaging means easier transportation, unpacking, and installation

Truly balanced input connections and output stage as with other 1100 Series products

Newly developed protection circuitry safely and immediately shuts down the output section in case of shorted speaker cables or faults in the system and allows for greater peak power output

Superior signal handling and resolution achieved using Boulder’s own 985 gain stage, just as in the larger 1160 Stereo Amplifier

Revised and redesigned automatic biasing circuit accurately stabilizes bias to eliminate the need for manual calibration

Complete smart-home and integration compatibility with 12V trigger, IP control, and networked HTML page

Software updates to the internal control and housekeeping systems available as needed with automated online downloads or manual USB port installation

1161 Stereo Power Amplifier
Continuous Power; 8, 4, 2 Ohms

150w

Peak Power, 8 Ohms

200W

Peak Power, 4 Ohms

350W

Peak Power, 2 Ohms

450W

THD, 8 Ohms, 150W

0.003%, 20 kHz: 0.01%

THD, 4 Ohms, 150W

0.004%, 20 kHz: 0.015%

THD, 2 Ohms, 150W

0.005%, 20 kHz: 0.025%

Equivalent Input Noise (EIN), 20 kHz, BW

1.5 μV

Magnitude Response, 20 Hz TO 20 kHz

+0.00, -0.04 dB

Magnitude Response, -3 dB at

0.015 Hz, 150 kHz

Voltage Gain

26 dB

Input Impedance

Balanced: 200k ohms,
Unbalanced: 100k ohms

Common Mode Rejection (Balanced Only)

60 Hz: 90 dB, 10 kHz: 70 dB

Crosstalk, L to R or R to L

-100 dB or better, 20 Hz to
20 kHz

Input Connectors

3-pin balanced XLR

Output Connectors

Two sets of 6 mm / .250-inch wingscrews

Weight

Amplifier: 54 lbs. (24.5 kg)
Shipping: 64 lbs. (29.0 kg)

Power Requirements

100, 110-120, 220-240 VAC, 50-60 Hz

Power Consumption

15W standby, 100W nominal, 1000W at maximum output

GIVE IN THE GROOVE

FAQs

Please read our FAQ before sending us a message.

How is my order processed ?

Once we have received your order and your payment, we issue you an invoice that will be mailed to you with a reference number for your order. Once your order is ready : it will be dispatched to you with insurance and tracking number.

Which payment methos are available in the Online Shop ?

You can choose between Paypal, bank transfer or Credit Card. Please take in consideration that payment via bank transfer will slightly delay the processing of your order as we have to receive your funds on our bank account to confirm your order.

Why are there different estimated delays prior to sending for some of the products

One of the politics of Ana Mighty Sound  is that every order is unique and made for a single customer. You will find next to each item an estimated delay prior to delivery. We will do our best to fulfill it before this delay (and most of the time we do).

Please keep in mind that we are a 100% human company working all over the Old World (Europe) and that we do commit to deliver you the best made / best quality product available, and to insure that : this can take some time.

Of course… some of our products are in stock !

Can I specify a courrier for my order ?

Yes you can ! Just drop us a line in the « additional remarks » of your mail order. This may add additional fees to your order. We can work with DHL, TNT, FedEX, UPS, French La Poste or Chronopost.

What if I have received the wrong item ?

In the very unlikely case this would happen just send us a photo of what you received and we will send you a courrier to fetch the item back. Once we have checked it out, we will send you the correct item.

My items are not up to specifications, what should I do ?

This is highly improbable as we use the most modern techniques to insure that our products are up to specs. In fact we even have a dedicated person checking that every single item is in perfect condition prior to shipping. Of course it can happen, but we doubt it seriously. In any case if you were bothered by something : just send us an email and we will sort it out with you.

I am very happy/disappointed with my order and I want you to know it ?

Please do not hesitate to drop us a line and we will be always happy to answer all of your requests. Our aim is your complete satisfaction.

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