Amplifier dual mono DM 250 NA
Try it at home!
Listen to the amplifier for 30 days and find out that it is the equipment you are looking for.
This is our special offer for you: test our product for 30 days. If you like it – it’s yours. If it does not meet your expectations – you will send the amplifier back and we will refund the entire amount.
3 simple steps in product testing:
- Buy a product and we will send it to the address you provide.
Your 30-day trial period begins on the day you pick up the parcel. - If you decide that the product is not for you, write to us at [e-mail] address with the information that you want to return. We will take care of everything and we will inform you by e-mail about the status of the return.
- The product will be checked immediately after receiving the return and if it is in the condition in which we sent it to you – the money will be refunded to your account within 10 days of receiving the return shipment from us.
Important information:
- Remember to keep the packaging for these 30 days of testing – it may be useful for a return (although we hope it will not be needed).
- When sending us an e-mail with information about the return, please give us the reasons – it will be important information for us whether and what should be improved.
- Remember that the equipment being returned must be in the condition in which you received it. If, after unpacking, we find damage or defects, we will have to charge you for costs.
- The organization and costs of the return shipment are on the side of Struss Audio
Even though we are confident in our equipment, we understand that it may not comply with your musical taste. However we hope you are satisfied with our product enough to make you want to keep it.
STRUSS AUDIO DM 250
No risk! Test it for 30 days, send the amplifier back and we will refund the entire amount. *
A world of music from the comfort of your own home!
Price: $ 5 632
* Terms & Conditions
“Mr Zdzisław was able to achieve the incredible amplifier – it is beautifully intense, dense, but it does not blend everything into gruel. Its trebles, have exceptional ease in filling the bandwidth without brightening or sibilants. The bass is majestically profound and powerful, although it does not compete with the best with it’s control and selectivity. It creates just a good background and a foundation”
Amplifier test on Positive Feedback.
Wojciech Pacuła, July 2018.
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PRE IN SWITCH
Struss dual mono amplifier has been equipped with a PRE IN switch which means our device can act as a preamplifier and enables independent use of internal power amplifiers.
Amplifier modes: Phono, XLR, CD / DAC, AUX1 (universal), AUX2 (universal), PRE IN
ABOUT THE DM250 AMPLIFIER
After many years of trials and improvements, a design was developed whose spatial layout of individual electronic and mechanical elements allowed to obtain the shortest possible connections between elements, high resistance to interference with an excellent cooling system and thermal stability.
One of the unique design solutions used in DM250 is the HPCS (Harmonics and Phase Conversion System). It is constructed on the basis of a transistor (J-FET) system, in which thanks to precisely selected technical elements, it was possible to obtain the effect of generating even harmonics, whilst reversing the phase of the signal. The HPCS system is a solution that, introducing some subtle modifications in the spectrum and dynamics of the acoustic signal, adapts the sound of the DM250 amplifier to the subjective needs and characteristics of human hearing. This resembles to a certain extent, the effects obtained in tube amplifiers, but without the inconvenience of using lamps. In addition, the amplifier has the ability to precisely amplify the acoustic signal throughout the whole acoustic spectrum, with a perfectly sounding and dynamic low frequency range. Also, the enhancement of medium and high frequencies, with a negligible effect on phase shifts, allows the listener to hear the exact location of apparent sound sources and the effect of reproducing sound and depth plans of the sound image. Thanks to this, it is also possible to obtain the effect of a “holographic sound field” that goes far beyond the classical effects of stereophony.
DM 250 has extremely vivid and colorful sound, whose values have been very highly rated by specialists from the professional sound and sound system industry, as well as lovers of high quality audio systems.
The amplifier has a phono input for the MM cartridge, anda RIAA correction preamplifier in which the Texas Instruments integrated circuit is used, based on the JFET structure.
The RIAA curve was modified, adding an additional time constant of 3.2 uS (Neumann), thus obtaining a greater spatiality of the musical image.
The power amplifier is built as a dual mono circuit based on FET transistors. The entire signal path was designed in such a way that the user could use two parts separately, i.e. from a preamplifier or power amplifier. The disconnection of these two components takes place by means of a switch placed on the front panel. In addition, there is the possibility to directly connect the power amplifiers to the acoustic signal source.
Combination of power amplifiers with high quality sources of signal, creates extremely precise and transparent image of audio scene with accurate and detailed reproduction of tiniest sound details. The DM250 amplifier allows you to transport the listener to the real acoustic space of the music being listened to.
SPECIFICATIONS
Power:8 Ω / 2 x 130 W (CLASS AB)
4 Ω / 2 x 250 W (CLASS AB)
Minimum impedance load: 1 Ω (instantaneous)
Work in class A up to: 2 x 10 W
Power consumption: STATIC 40 VA – 800 VA (PEAK)
Output impedance: 0.10 Ω
Distortion – THD:
0.1% at 1 W / 8 Ω,
0.025% at 130 W / 8 Ω
Frequency response: 5 Hz – 250 kHz – 3 dB / 1 W / 8 Ω, 10 – 30,000 Hz: ± 0.1 dB
Slew rate: 200 V/μs
Dynamics: 140 dB
Signal – noise ratio: 145 dB (IHF – A)
Inputs:
2 x universal – RCA
XLR Amphenol
separated CD / DAC – RCA
phono MM – RCA
input power amplifiers – RCA
Preamplifier: output – RCA
Sensitivity of inputs:
500 mV – universal inputs and dedicated CD / DAC
250 mV – XLR input
3 mV – MM input
0.775 V – power amplifiers
Impedance inputs:
100 kΩ; universal inputs and CD / DAC
22 kΩ XLR
47 kΩ MM
47 kΩ power amplifiers
Potentiometer (volume): the highest precision model the Alps – Blue Velvet
Transformers: 2 x toroidal, magnetically isolated 500 VA each
Capacitors filtering the supply voltage: 4 x 15 000 uF – Nippon Chemi-Con
Advanced protection system: against short-circuiting of the loudspeakers and a stream of DC voltage at the output
Remote control:
RC5 code (volume)
The DM 250 amplifier fulfills all requirements and standards valid in the EU
Net weight: 16 kg
Dimensions: 430 x 102 x 338 mm
Manufacturer’s warranty: 24 months
Remote Control:
code RC5 (volume)
