Give in to the Groove

Product details

About

Through the worldwide success of the 866, Boulder has expanded the 800 series with the 812 DAC, Preamplifier, headphone amp.

By applying the design philosophy from the 866, and over 35 years of experience designing DAC’s, preamps, and amplifier circuits, you get a device that has precision, top of the line performance. Plus the quality and reliability you would expect from a Boulder product, in a refined package.

The 812 is Boulder’s first headphone amp, and we didn’t hold back. It has a separate sophisticated headphone amplifier circuit, four types of connections, and headphone sensitivity settings within the Boulder Controller app. With 200mw into 8 ohms and 80mw into 600 ohms, the amplifier section in the 812 will drive any headphones or multiple headphones at once. It is a headphone enthusiast’s dream come true.

It can be used just as a preamp, a DAC, a headphone amp or any combination of the three. With all the features and its versatility, the 812 is perhaps the highest value product Boulder has ever produced.

The 812 is something for long-term Boulder fans, headphone enthusiasts, or for someone starting their first Boulder system. We wanted to create something accessible and multifunctional that could fit into any sound system or become the system itself. The 812 accomplishes that.

Specifications

FEATURES

Sophisticated headphone amplifier. Allows for 1/8″ mini, 1/4″, 4-pin balanced and Pentaconn headphones.

Streaming capabilities, Roon endpoint, UPnP playback and Air-Play functionality.

A software-enabled fixed DAC out option.

A dedicated Boulder app controls the 812 and makes custom setup adjustments, like headphone sensitivity. Optional RF remote for volume control and switching inputs also available

Two pairs of balanced analog inputs. One pair of balanced analog outputs. Two Toslink optical inputs, one coaxial input and one USB-B input.

Along with assembly and testing, every circuit board and piece of metalwork is produced in-house at Boulder’s dedicated facility for unparalleled quality assurance.

In-house manufacturing efficiency improvements have made the 812 an incredible value in comparison to previous preamplifiers and DACs.

Stylish headphone bay cover to keep dust out of headphone jacks.

Easily switch between headphone and preamp mode with the output exchange button.

SPECS

812
DAC PREAMPLIFIER

CONNECTIONS
(FRONT)

•4-Pin XLR Headphone Connector
•1/8” Headphone Connector
•1/4” Headphone Connector
•Pentacon Headphone Connector

CONNECTIONS
(BACK)

•2 Pair XLR Analog Inputs
•1 Pair XLR Preamplifier Output
•4x USB Host
•Ethernet
•USB-B
•2 Optical Digital Inputs
•Coaxial (RCA, SPDIF) Digital Input

SOFTWARE FEATURES

•Based on 866 DSP Filter and DAC topology
•Configurable Headphone Sensitivity
•Available Fixed DAC out
•HTML Programming
•Control through Boulder Controller App
•Input Trim

HARDWARE FEATURES

•Switch Between Headphone and Preamp Outputs
•Volume Knob & Chassis Machined In House
•100 db Optically Encoded Volume Control
•Innovative Protection Circuits

MAXIMUM INPUT LEVEL

6.0 Vrms

MAXIMUM OUTPUT LEVEL

14.0 Vrms

THD+N, 2V OUTPUT, 2KHZ

.0017% (-95.5 dB)

MAXIMUM VOLTAGE GAIN

19.4 dB

VOLUME RANGE

100 dB

VOLUME STEPS

1.0 dB

FREQUENCY RESPONSE 20 HZ TO 5 KHZ

+0.00, -0.03 dB

FREQUENCY RESPONSE, -3 DB

.02 Hz & 250 kHz

CLIP TO NOISE RATIO

116dB

INPUT IMPEDANCE

100kΩ Balanced

OUTPUT IMPEDANCE

100Ω Balanced

POWER REQUIREMENTS

90-240V

POWER CONSUMPTION

50W Max

HEADPHONE AMP SECTION

32Ω 200MW OUTPUT

2k Hz 20k Hz

0.0010%. 0.0053%

HEADPHONE AMP SECTION

150Ω 200MW OUTPUT

2k Hz 20k Hz

0.0010% 0.0034%

HEADPHONE AMP SECTION

600Ω 80MW OUTPUT

2k Hz 20k Hz

0.0011% 0.0043%

DIMENSIONS

12”x12”x 3.5”

WEIGHT

14 lbs

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.

Didn’t find your answer?

Don't hestitate to contact us