Browse manuals in d/denon/denon-pma/. Read directly or download PDF. No login, no charge and no limit. Denon PMA-250SE Stereo Integrated Amplifier - Black. Condition is 'Used'. Owned by me for 20+ years bought brand new, a few minor scratches still works fine. I’m also selling the matching CD player and Mission Speakers. SE service manual - diviak. Denon Integrated Amplifiers. Submitted by mercyinspired on April 16th, 2014. This is the Denon PMA-350SE - Very different from the plain Denon PMA-350. Does anyone have a schematic for this model? Submitted by dynoport on June 4th, 2016. Denon PMA-250 is a perfect choice for a system with small and medium-sized speakers in a 10-25 m2 room, and a great alternative for NADs (including the 3020), Creeks and Cyruses.

Denon Pma 250 Se User Manual Pdf
Denon Pma 250 Se User Manual Online
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The witcher enhanced edition 1.5 patch download. Manual Library / Denon

Stereo Integrated Amplifier (1990-91)

Specifications

Power output: 70 watts per channel into 8Ω (stereo)

Frequency response: 20Hz to 20kHz

Total harmonic distortion: 0.015%

Input sensitivity: 0.2mV (MC), 2.5mV (MM), 150mV (line)

Signal to noise ratio: 75dB (MC), 94dB (MM), 110dB (line)

Dimensions: 434 x 140 x 353mm

Weight: 7.7kg

Denon Pma 250 Se User Manual Pdf

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service manual - jpj

service manual (alt scan) - Ivy Caudieus

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Denon Integrated Amplifiers

PMA-550

PMA-600

Reviews

Reviewed May 11th, 2019 by Nick Name

Good amp, lots of watts, nice open sound. Very good quality hifi. Not high-end, but that is not to expected.
Note: the power supply good be improved by adding some extra capacitors, and that will result in even better sound.

Reviewed Sep 14th, 2018 by mjagjpereira

Very dynamic sound, clear and precise soundstage. A little bright on the top end.

Reviewed Apr 19th, 2016 by blizzard

As an avid collector and owner of Denon audio equipment, I picked up this little gem for 150$. Late eighties early nineties, Denon were at their peak, and this little amp is an example of that. Low and medium volume levels, this is an Absolute sweat sounding amp with with deep controlled bass, warm detailed midrange and crystal clear highs, thanks to Denon's optical class A biasing which keeps this baby singing in full class A at low to medium volumes. My speakers are huge floor standers which are difficult to drive because of their low impedance, but no problem for this amp. Only on high volume beyond comfortable listening levels, do the wheels come of on this 70 watt amp and manifests itself in the highs becoming a little aggressive. Did a back to back comparison to the latest 100 watt offering from Nu Prime and the Denon ran all over it.
They simply don't make em like that anymore!The amplifier is 100% original and functioning after 25 years like most of the Denon equipment I own from that era.

Reviewed Jun 09th, 2015 by colin44ct357

i had the 680 a year back which was a true pleasure to listen to, deep and pure..as good as or better than the nads, well this one is on a par and delivers 110wrms x 2 at 0.7 which is pretty impressive. just finished reworking the main pcb and speaker selector/protection pcb.loads of dry joints on both, well for an amp of this age that is to be expected. the new digital equipment can get lost, this is HI FI!

Reviewed Jul 27th, 2014 by micthetic

Denon Pma 250 Se User Manual Online

Pretty much agree with the other poster. These amplifiers offer a very neutral, open, quite deep and definately hifi experience. It cannot be faulted for the sort of money they sell for secondhand. I wholeheartedly recommend this amplifier if, like me, you once delved heavily in audiophilia and now take things a lot less seriously but still know and demand good performance from your equipment. Solidly built with a decent phono stage you don't need to look any further than the Denon PMA-560 if you're considering buying a quality budget amplifier.

Comments

Denon fans are a dime a dozen, but most of them seem to be fixated on powerful amplifiers. On the other hand, people looking for a good amplifier with low or medium power are more likely to choose a Rotel, NAD, one of the many British amps, or something from the 70s. Lower power Denons (20-40 W per channel) are not very popular and it appears that at some point Denon stopped making those and offered mini systems instead. But in the 80s there were several such models, including one particularly worthy of attention due to availability and low price: the PMA-250.

The amplifier has a very simple design in and out, which is an obvious advantage. The only solutions that are not quite standard are the CD Direct button that cuts off the input selector and passes the signal from the CD input directly, and the volume control potentiometer that has separate adjustments for left and right channel (rather than common volume adjustment for both channels and a separate balance pot). Interestingly, CD Direct does not bypass tone control, only the input selector and tape monitor switches – but it shortens the signal path, audibly improving the sound quality. Apart from that, the amplifier is as simple as possible, while maintaining the standard features. PMA-250 doesn’t even have low, high and loudness filters, and there are connectors for only one pair of speakers. The amplifier is clearly designed for a small, simple system. It was available in black and silver, black fading to dark gold, much like on Protons. The effect actually can look good, unless the previous owner put stickers on the amp – then the surface under the stickers remains black. In any case, silver face version looks better to begin with and does not have the fading color problem.

The PMA-250 is as clean inside as it is on the outside. Wires are few, power supply section and power transformer are separated from the audio sections with a decent heatsink, phono stage and volume control are far from the transformer. The design is mosty discreet (1 IC in the phono stage, 2 in the power amplifier section). With decent PS and cooling, the amplifier handles low impedance speakers very well (within the limits of its power).

Sonically – we liked the amplifier from the first note. It had very good clarity, dynamics, and the presentation was very pleasant. We immediately decided to compare it with a few other amplifiers that can be purchased for a similar price and that we had at hand at the time: Kenwood KA-31B, Fisher CA-2221, and Russian Vega 10U-120S. The A/B comparison showed how good this amp really is. Kenwood and Fisher did not stand a chance: Denon sounded a little brighter, but much more dynamic, created way better soundstage, with greater depth, and it was smoother, more musical. Vocals sounded great – presented with class, without any grain or sibilance. Denon exposed the details, which in the case of the other two Japanese amplifiers were buried somewhere in the background, or inaudible at all. Bass was less generous than from the Kenwood, but present in adequate amounts and very well delivered. Surprisingly, the only amplifier that did not fail miserably in this comparison was the Soviet Vega, which sounded different, but not clearly worse (bass was lower, but shorter, highs and mids a bit softer). In any case, Denon showed class we would not expect from a budget Japanese amp from any period, not just the 80s or 90s. Its sound was actually quite… British. Incidentally, this Denon was highly praised by British reviewers and compared with NADs.

A small hint: it is worth hunting for units with intermittent / disappearing sound in one or both channels. A very common source of problems in this model are solder joints under the volume potentiometer. 5 minutes with a soldering iron and problem solved.