Sony Portable PHA-2 Headphone Amp/DAC with DSD

Coming March 2014, Sony releases the PHA-2 – a portable rechargeable headphone DAC and Amp. Sporting features like PCM files up to 24 bit 192 Khz and even decodes DSD audio files.  Portable DSD from the company that brought it to you!

Sony PHA-2 coming March 2014

Sony PHA-2 coming March 2014

  • Hi-Res audio: PCM 192kHz/24 bit, DSD 2.8/5.6MHz
  • Direct Digital Connection for PC and Apple® devices
  • Enhances non hi-res music sources (via analog input)
  • Asynchronous, precision USB clock for superior sound
  • Premium DAC with separate operational and headphone amps
  • Durable aluminum enclosure with protective alloy bumper
  • Selectable gain supports impedances from 8 to 600 Ohm
  • Lithium-ion battery for up to 17 hours battery life
  • Line-out to connect external amp or active speaker
  • Mounting straps, protection sheet and cables included

Also released (October 24, 2013) is this new app for playing those Hi-Res files:

Onkyo HF Player App Offers Precision Equalizer, 192/24 Playback on iOS Devices

Introducing Moon Professional 3500MP

You may be familiar with Canada’s Sim Audio, they’ve been producing top quality audiophile equipment since the 80’s.  And if my phono preamp is any indication, this new offering in the form of a microphone preamplifier should be interesting. The headroom is very high, 32dBu! No overload indicator or level meters are provided. Take a closer look at the Moon Professional 3500MP:

Moon Professional 3500MP

Moon Professional 3500MP

  • A “purist design” for optimal sonic performance and lowest possible noise floor.
  • AC-coupled transformerless design for increased bandwidth and more accurate sonic reproduction.
  • Wide gain range of 8.0 to 66dB with -3.5dB of variable output trim.
  • Metal film resistors and polypropylene film capacitors.
  • 2 fully independent audio channels, each on separate printed circuit boards.
  • No electrolytic capacitors in the signal path (non-phantom mode).
  • Built-in Power supply using 2 ultra-low noise toroidal transformers (1 for the audio signal circuits; 1 for 48V phantom and control circuitry).
  • Housed in an isolated enclosure constructed from satin coated 14-gauge steel, designed to eliminate all traces of AC artifacts.
  • Swiss-made 24-position gain potentiometers featuring gold-plated contacts and thinsurface-mounted film resistors with 1% tolerances.
  • High-reliability sealed relays and toggle switches.
  • High current output stage to accommodate very long cable runs and capable of driving 600ohm loads.
  • Rigid external chassis with solid aluminum front and side panels and heavy gauge steel on the top, bottom and rear panels for shielding from RF, EMI and external vibrations.
  • Circuit board with pure copper tracings and gold plating that yields low impedance characteristics.
  • Designed to be powered up at all times for optimal performance.
  • Low operating temperature to ensure long life.

Subway Train in Stereo

slow shutter photo of  D.C. metro subway train

slow shutter photo of D.C. metro subway train by Vahan Baladouni

Location sound can present a variety of challenging obstacles to capturing hi-fidelity sound. The infrasound that a fast moving train creates can become a problem for directional mics positioned nearby. Using the techniques described in my previous microphone isolation post allowed me to maximize the available headroom in my recording. Below, listen to a stereo recording I made of the Washington D.C. Metro train. You will hear the subway train arriving from a far left tunnel, after it stops the doors open in the center, then the train rumbles as it fades away into the far right tunnel. The distinct panning or movement of sound in this stereo recording was captured using the ORTF stereo mic technique. Try a pair of headphones or stereo speakers for a fully immersed experience.

Higher quality versions of this recording are available, as well as custom sound designs/effects. Stay tuned to HiFiQC for previews of quality sound design/SFX.