The amplifier is fully balanced from input to output if driven with a balanced source, and if not driven with a balanced source, the signal is immediately transformed to a balanced signal.
The fully balanced design gives clear advantages regarding hum and noise suppression - also from other sources. And the balanced design is not only used in the signal path - even the feedback loop internally in the output stage is designed to be fully balanced.
The signal path is furthermore DC coupled to the widest extent - except from DC blocking capacitors in the input the construction is DC coupled through the rest of the construction leaving no discussion about capacitor quality.
In the analog signal chain only the highest quality components are used as Ultra low distortion Burr-Brown op-amps in the input stage and Polypropylene capacitors in the output reconstruction filter.
Your may be the master of your home but you are a slave to room acoustics. The listening room has a huge impact on the final quality of music replay. Once your precious audio system has transformed the electrical signal into audible sound waves you are no longer in control and the music you hear is subject to the strict physical laws of acoustics.
The room size, shape, walls and furnishings all play their part. The distance between the loudspeakers and your ears is an acoustic minefield simply because all the sound reflections from your room makes even a short distance very dangerous and totally unpredictable. The music will undergo dramatic sound coloration - frequency changes - enforced by the room acoustics. What's for certain is that what you will finally hear is far from perfect.
Hard surfaces like walls and windows will reflect and reinforce sound, whereas soft furniture and carpets will absorb and dampen sound - all at different frequencies. Room resonances interfere with the bass so that deep notes will be strongly emphasised in some places and disappear in other parts of the room. If you imagine the original music as the flat topographical profile of Denmark it will actually look like a profile of the Himalayas in your listening position.
Room acoustics are based on inevitable physical laws just like gravity (and try to avoid that!). Some try to minimize coloration by placing the speakers well away from walls to obtain a smooth bass response. But that will severely affect the timing and precision of the bass. So, damping one room problem will just magnify another one.
Well, not any longer - today you have a solution. Lyngdorf has created the most intelligent music system ever heard. RoomPerfect® adjusts the music signal to your room acoustics, removes the negative effects and presents only the pure music for you to hear. And it works perfectly in any kind of room, and with any kind of music system.
How is that possible? First we measure the coloration - the frequency changes your listening room imposes on the music. Next, RoomPerfect® analyzes the intelligence gathered and adds counter measures to the music signal that will neutralize the room coloration.
So, the choice is yours: Either your room acoustics will dictate how you hear music. Or you can take perfect control of your own listening room with RoomPerfect® and finally listen to music as it was intended to sound. That is what we call an audible breakthrough for art - a true re-play revolution.
DPA-1 features both analog and digital in and outputs and we have therefore taken some quite dramatic steps in order to maintain signal quality at an extremely high level when making A/D and D/A conversions.
Analog to digital signal conversion is handled via the same high performance AK 5394 converter employed in the flagship Millennium ADC. The converter is built to outperform noise levels of most analog sources. Whether you use the single ended or balanced inputs provided, the signal is immediately converted to a balanced signal.
The D/A converter section (also used in the Millennium) is used to drive a high quality, single ended and balanced output stage. The D/A converter is built around the fine Wolfson WM8740 - which in combination with our balanced design with very fine audio opamps results in outstanding sonic qualities.
The DPA-1 has been carefully designed using the experience gained from the state-of-the-art Millennium and TDAI amplifiers regarding internal noise in both the analog and digital signal sections. This incorporates special low-noise design techniques reducing digital interference in the product thus giving better working conditions for the critical converters which are sensitive to noise. All the signal paths of the DPA-1 are individually impedance-compensated (using transmission-line principles) ensuring better noise immunity, while optimum impedance matching is maintained in order to preserve the original signal shape.