Acoustic Research M2 Review – Android on Steroids

Acoustic Research is one of those old names which has been connected with the world of hi-fi for some 63 years now, although it has changed hands a few times since. Responsible for quite a few innovations over the years, can this brand offer anything new to music fans in 2015? Fully equipped with Wi-Fi capability, the AR-M2 can work with streaming services such as Spotify; so now we’re not limited to the tracks we have stored on our players.

Design and appearance

The M2 is a relatively large and weighty player, with the front side almost completely composed of glass; a fair amount of which is the touchscreen (62mm x 110mm to be exact). The back of the player is bevelled and it settles in the hand well. Its angular form and dark glass screen is reminiscent of a 1980s coffee table, but only a little one.

Key Features

Given the M2 is an android-based player, there’s a fair amount of customisation possible – there’s no bloatware or anything to get in the way, but users can always add items they wish to use. Spotify was installed without a problem, for instance.

Other than the touchscreen, there are 4 buttons on the side for track control and power on/off and a volume wheel on the top. Outputs are limited to headphones and line-level output. There’s a little sliding door for micro SD cards if the internal 64Gb isn’t enough for your music collection, and of course a slot at the bottom for connecting to a computer via USB.

The player can be ‘locked’ for when it’s playing whilst in a pocket or bag; however the buttons on the side still function so there may be some issues there. The volume control wheel on the top is still sensitive when the M2 is locked so again, care is needed.

The player was taken outside on one of the brightest days we have in the UK (we do get bright days) and with the settings adjusted for maximum screen brightness, the screen was clearly legible. The only problem is the fingerprints on the vast expanse of screen which are also clear to see.

The Dac within, a Burr-Brown PCM1794A offers up to 24-bit/192kHz playback and supported formats include DSD, WAV, AIFF, FLAC and ALAC.

Being Android-based, streaming services such as Spotify can be installed on the AR-M2 for use over local wifi networks, making this player more useful still.

Durability & build quality

As alluded to above, the M2 is solidly built and gives the impression of something which will last for a good few years. The back does have a hollow ring to it when tapped with a fingernail, but it doesn’t feel hollow or flex with pressure.

The M2 will be fine in a trouser pocket, but tight trousers might not react too well. Bend over and you might gore yourself – the design is strong and unyielding! The M2 comes with a velvety pouch for protection – ostensibly for the player itself, but it might help avoid the odd nick or scratch elsewhere too.

The buttons on the side of the unit for play controls can be operated even when the unit has gone into standby/hold mode, so fishing the AR-M2 out of a pocket may cause an unintended change of track. Also, the volume control can be operated while in this state. Although it’s firm, it’s loose enough to be operated by material brushing against it in the tight confines of a pocket or bag.

Sound Quality

There’s no question about the power available within the AR-M2; with a HiFiMAN HE-6 attached, volume gets up to a respectable level – even a little too loud for sustained listening, depending on the genre. Likewise with the Audeze LCD-3.

With IEMs such as the Dita Answer (Truth Edition), the AR-M2 is in its element with well controlled bass, excellent space and detail in the midrange, and a rich airiness which brings the best out of both the music and the earphones.

Within the supplied AR player app, EQ settings are possible with many genre-based presets but there’s a limit to the control possible with the rudimentary 5 band on there. This can always change with future updates, however the unadulterated sound of the AR-M2 is perfect.

Pros:

Fast, responsive touchscreen
Large internal memory
Can run apps such as Spotify

Cons:

Side buttons can be pressed while unit is on ‘hold’
Volume control can be accidentally operated

Summary

The Acoustic Research M2 (or AR-M2) is a fantastic sounding player which is well worthy of a position at its price point. Holding it gives the impression that it’s a serious bit of kit, despite all the fun it gives. It has enough power to drive all commonly used headphones well; even 600 ohm cans with sensitivity below 90dB. The large internal memory and the adaptability offered by the Android-based operating system make this a very nice pocketful, although a large one. It’s definitely one for a jacket pocket or bag.

Please take a look at our video review below for more details.

The post Acoustic Research M2 High Resolution Audio Player – Expert Review appeared first on HiFiheadphones.

Earlier this year we were pleased to announce the new Lotoo PAW Gold player, but now there’s a smaller (and a much lower cost) model from Lotoo called the PAW 5000. At half the size, less than half of the weight and less than a quarter of the price of the PAW Gold model, can this upstart bring home the audio bacon?

Design and appearance

The button arrangement on the front is very similar to the earlier model, and the wheel on the 5000 model enables files, folders and options to be selected. The PAW Gold’s frontage was adorned by a little too much of the blingy stuff by all accounts, so the 5000 has been reined in with just a touch of gold on the power button. Very tasteful.

With handheld devices, the trend seems to be towards touchscreens now. This can give greater functionality and versatility, but buttons do offer a more instant tactile feedback. Also the advantages of a button-operated unit present themselves in winter where the PAW 5000 can be used with gloves on, or with gloves off and cold fingers!

Key Features

The PAW 5000 has more connectivity than the PAW Gold, with an optional SPDIF output for attaching to an exterior DAC. There’s a headphone socket of course, and a line-out socket for external amps. Another welcome option is the ability to work with bluetooth headphones via the bluetooth 4.0 standard so you can enjoy your music wirelessly without the possibility of snags.

Durability & build quality

The PAW 5000 is a lot lighter than the PAW Gold, but still feels solid. Buttons feel well made, and the wheel has a free-flowing quality about it while still feeling sturdy. Unlike the PAW Gold model however, a collision with a tiled floor may result in a dented player, rather than a cracked tile. Although the player has no flex or ‘give’ as it’s squeezed in the hand, a tap on the back cover does betray a slight hollowness.

Sound Quality

(Tested with an Audiofly AF180 IEM with EQ off on the player)

We’re used to using earphones such as the Audiofly AF180 with a Chord Hugo (with a Fiio X3 connected via coaxial) and so were expecting a bit of a drop in quality in terms of sound quality. It’s not that easy though.

With EQ disabled, sound is neutral with a nice depth and breadth – soundstage is as good as headphones will portray. The presentation does not have the precise, clinical edge which some high-end players (such as the AK240) have, but that’s no bad thing. Details are not lost; they are there, but just not pushed at the listener so much.

The Lotoo PAW 5000 is a good match for these earphones; the AF180 earphones cost only a little more (at £369.99) and are well served. The PAW 5000 helps to bring out the best in them, and should the listener wish to have a bit more (or less) edge to the sound, the EQ settings should have something to please. These are much the same as the PAW Gold player, featuring both permanent presets and user configurable presets too.

Pros

Digital output (SPDIF)
Balanced output (2.5mm)
Many EQ presets, also user configurable EQ
Bluetooth 4.0

Cons

No internal memory
Supplied SuperSpeed USB cable is quite short

Summary

The Lotoo PAW 5000 does not require deep pockets; in more ways than one. The sound quality and features found on this device rival much higher priced equivalents offered by other makers, and the diminutive size of the PAW 5000 makes it very convenient to keep as a constant companion for those quiet (or noisy!) moments.

The post Lotoo PAW 5000 High Resolution Audio Player – Expert Review appeared first on HiFiheadphones.