Pioneer A-40AE Review – Thoughtfully Designed Mid-Range Desktop DAC with Integrated Amplifier

November 18, 2023
Written By Soundsight

Today’s hi-fi market offers a broad range of audio equipment for those who want to listen to music in its best quality. These include all-in-one systems with Internet access, wireless speakers, portable players with headphones, and computer digital converters with desktop speakers. However, many audio enthusiasts prefer to use older, stand-alone types of audio circuits, as they can create their own sound instead of buying a standard product.

To cater to such a market, Pioneer treats its users with some exciting audio products. Among them is the A-40AE integrated amplifier. While the code name might raise some hopes, it has not come the time to remake the iconic A400X model. The A-40AE is simply another integrated amplifier belonging to the growing two-channel line-up.

Pioneer A-40AE Mid-level desktop DAC+AMP Review

Pioneer A-40AE Specifications

Type: Integrated amplifier, stereo
Output Power: – 60W+60W (20Hz-20kHz, 0.5% THD, 4 ohms, 2-wire connection), 30W+30W (20Hz-20kHz, 0.4% THD, 8 ohms, 2-wire connection)
Playable frequency range: 10Hz-100kHz (measured at +1dB/-3dB)
Signal-to-noise ratio (IHF-A): 106dB (line-in, SP out), 81dB (PHONO in, SP out)
Power supply: AC 220-230 V, 50/60 Hz
Power consumption: 150 W
Standby power consumption: 0.2 W
Dimensions (WxHxD): 435 x 129 x 323 mm
Weight: 18 lbs (8.2 kg)

Features

  • Direct power design
  • Enhanced construction
  • Isolated power circuits
  • Custom ELNA capacitors
  • Built-in Wolfson 192kHz / 24-bit DAC
  • Support for high-resolution audio sources
  • Direct mode
  • Direct power amplifier mode
  • A + B speakers
  • Integrated tone control – available (bass / treble)
  • Balance control
  • Automatic switching to standby mode

Connections

  • Analog audio inputs (gold plated) – PHONO (MM), CD/SACD, LINE 1, LINE 2, LINE 3, LINE 4, P.AMP DIRECT
  • Digital audio inputs – optical, coaxial
  • Analog audio output – line out
  • Headphone output
  • SR input/output

Design & Ergonomy

The amplifier has a classic metal chassis and an aluminum front panel with buttons and keys for easy configuration and operation. Selected inputs are indicated by an LED.

Next to the main switch are:

  • SR “detector,”
  • Gold-plated 6.3mm headphone jack
  • Four small buttons (Direct, Speaker volume control filter, Speaker switching: A/B/A+B, P.Amp Direct)

Between the gain control and the source selector are eight blue LEDs indicating the names of the inputs: Phono, CD/SACD, Line 1, Line 2, Line 3, Line 4, coaxial, and optical.

Compared to the A-30, this speaker is even more impressive. The front panel is made of a thick aluminum plate, as are the controls. The tone controls appear to be metal, while the volume knob is made of aluminum and is more prominent. Other enclosure components are made of steel sheets.

The Pioneer desktop amplifier is a traditional class AB amplifier. After opening the cover, a well-assembled power transformer and components are visible. The transistors sit on an appropriately sized heatsink next to a pair of ELNA power capacitors. The quality of the power supply has improved over the A-30.

The manufacturer advertises an output power of 30W/channel (8 ohms, 0.4% MTF); 30W/8 ohms (60W/4 ohms) is enough to fill a small to medium-sized room or to power floor-standing speakers.

The A-40AE amplifier has bass and treble controls and a Loudness control that can be turned on or off to compensate for bass non-linearity based on the noise floor. Other amps allow adjusting the noise floor, but here you can only turn it on and off, which is less flexible.

Technology

The power amplifier uses the same circuit with two Darlington transistors. The new model uses fewer transistors, and the motherboard has been completely redesigned. The volume control is still done with the classic Alpine potentiometer.

The Pioneer A-40AE is equipped with a D/A converter using an excellent Wolfson chip, supporting 24-bit resolution and a sampling rate of up to 192 kHz.

The power transformer windings of different circuits are kept separate to avoid mutual interference. The filter capacitors have been specially designed by ELNA for Pioneer audio equipment.

Pioneer’s proprietary technology, known as “Direct Energy,” includes power supply optimization and improved circuit layout, which shortens the signal path, greatly improving the signal-to-noise ratio.

Sound Quality

Pioneer has impressive experience designing and manufacturing amplifiers, so everything is expected to be good here in terms of sound quality.

The amplifier is equipped with a 24-bit/192 kHz DAC. It handles orchestral music well and performs even better with less demanding recordings. It has a balanced output, wide stereo panorama, and good detail but lacks dynamics, which can be improved by using the direct mode only.

You’ll be greeted by dynamic, clean sound, emphasizing rich bass and midrange. The A-40AE mid-range desktop amplifier is designed for fans of rock and electronic music. This amplifier has an enviable versatility that makes it suitable for almost any music genre.

Bass is deep, extended, and manageable. Treble is convincing, considering the price of this integrated amplifier, being selective, airy, delicate, atmospheric, and rich in detail.

The extreme ends of the audio spectrum are wonderful, but the midrange is less than perfect. However, all bands work well together, creating a neutral sound profile in terms of timbre and dynamics.

Overall, the A-40AE is clean and has very good tone control during explosive passages. When a very fast dynamic attack is required, some recordings may sound lackluster, lacking expression, and the sound seems a bit too soft.

Conclusion

The Pioneer A-40AE is a solid and contemporary representative of classic Hi-Fi. While many digital devices have complex controls, this desktop headphone amplifier is simple to use and can easily be used with PC stereo systems or the latest digital sources.

The A-40AE offers decent sound quality and an ideal design that is unlikely to go out of style even in an ever-changing digital era. It is a good choice for those who want to enhance their music and experience it to the fullest. It is ready to build various audio systems and has excellent playback capabilities.