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Dared DV-845
1 Reviews
rating  5 of 5
MSRP 
Description: Dared DV-845 MONOBLOCK POWER AMPLIFIER (SINGLE-END CLASS A) <BR> TECHNICAL SPECIFICATIONS: <LI>MAX OUTPUT POWER: 20W <LI>FREQUENCY RESPONSE: 20-20KHz (±0.8dB) <LI>DISTORTION: =1% <LI>SIGNAL TO NOISE RATIO: =89dB <LI>INPUT SENSITIVITY: 750mV <LI>INPUT IMPEDANCE: 100K ohm <LI>OUTPUT IMPEDANCE: 4 ohm/8 ohm <LI>SIZE: L495 X W260 X H180 MM /piece <LI>WEIGHT: 25.0Kgs/piece <LI>THE TUBE USED: 845x2,6SN7x4


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User Reviews

Overall Rating:5
Value Rating:5
Submitted by andrewmcalister a AudioPhile

Date Reviewed: September 3, 2010

Bottom Line:   
I brought these for $3400 dollars and compared them to my Plinius SA 250. I found them to be more detailed than the Plinius, but a bit less control of bass. If you like rock music, you would have to bi-amp with something that can supply more bass power. For 90% of music they are very very good. With my Jordan JX53 array speakers (92 db/w) there was some sound stage image for some music. 3 stars as manufactured.
I have now modified the amplifiers by replacing 7 resistors in each amp with tantalum Shinkoh non-inductive resistors. This alone made an enormous difference to clarity and sound stage, I also then changed the 4 Auricap capacitors (rated 8/14) with Ampohm copper foil paper in oil rated (12/14). This made a further improvement.
I now hear the sound stage easily. I have been listening to my collection over again. Everything is different.
Many cd's completely captivate me now but didn't before, some I thought were good, now are shown to be imperfect recordings (Reference recordings are fantastic!). I enjoy choir and prom recordings most. I get a strong sense of looking down on the choirs in the Royal Albert Hall. Voices often sound like there is a real person behind the curtain (I've got heavy curtains around the room), or standing in the middle of the room.
I'm just so moved every time I listen, I wish I could share it with more people.
Next improvement will be to replace speaker resistors for non-inductive ones. Then add bypass capacitors to the amps.


The idea I have stuck to is to use minimal components, no pre-amp.
The speakers are full range (100 Hz to 20,000) and only have a capacitor (2Uf Mundorf Silver PIO) and resistors in parallel. They roll off by themselves at about 15o Hz. There are 4 JX53's in each Jordan designed cabinet (I built them). For bass I have made 6ft long by 2ft high 'coffins' - transmission lines with Kef B139's.
These roll in at about 220Hz. I have used a 3rd order bass Xover because with the 1st order, I found these went all the way up to about 1200 Hz, causing a muddying of the mid range.
Although I have a Music First Copper pre-amp (passive), I don't use it for CD's because I find that it lightens the bass slightly (a common finding with passives apparently, I guess bass is reduced by 3 to 6 db). I have an Ah Njoe Tjoeb CD player with all extras, incl. 24bit 192kH up-sampler. This has an in-build volume control, which I usually have at above 75% as I've tweaked it to match the sensitivity of the amps.

I think Dared should offer an option to build with those components.

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Used product for:   3 Months to 1 year

Duration Product Used:   AudioPhile

Product model year:   2005




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