Audio engineers and professional studios in search of a high-powered studio reference monitor will be impressed with the single, black PSI Audio A25-M, the company's flagship main and mid-field studio reference monitor designed to be tonally balanced; with high-resolution detail and an efficient transient response for precision accuracy in surround setups and stereo studio monitoring applications. The tri-amplifier delivers 170W to the 10.2" woofer, 80W to the mid-driver, and 50W to the 3.9" tweeter, which combine to provide a frequency tolerance of 38 Hz to 20 kHz (+1.3 dB) at an SPL of 124 dB per pair. The tweeter is handcrafted in-house to ensure performance and accuracy.

The amplifier output also features AOI output stages and includes a protection circuit, which can be monitored via the red LED on the front panel. The active crossover with integrated CPR delivers an impulse behavior with accurate stereo imaging. The crossover is also optimized for maximum phase coherence, projecting a wide horizontal and vertical listening area. The electronics are housed in a unit that is mechanically isolated from the speaker cabinet to avoid resonance at high sound-pressure levels.

The rear panel offers a balanced XLR input and features a volume control and a roll-off control for optimizing the low frequencies for standalone use or when using an optional subwoofer. The mid-high section can be turned 90°, allowing for the speaker to be placed in a horizontal position, while maintaining proper dispersion. The PSI Audio A25-M includes a power cord, anti-slippage stickers, and an individual frequency-response diagram.

Mid-field / Main Reference Monitor    10.2" Woofer, 5.6" Mid, and 3.9" Tweeter    Class-G Amplifier    Tri-Amp: 170W + 80W +50W    Freq Response: 28 Hz to 23 kHz (-6 dB)    Max SPL: 124 dB (Pair)    Designed for Stereo and Multichannel Use    AOI, ALG, CPR, PSC Technology    Horizontal: Mid-High Section Rotates 90°    Volume and Roll-Off Controls

• Tweeter unit handmade by PSI Audio
• Flat frequency response
• Optimized directivity by phase coherency
• Class-G low-temperature amplifier stage
• Rotation of mid-range section for horizontal use
• Compatible with industry-standard mounting systems
• Amplifier unit acoustically uncoupled from speaker cabinet
• Protection circuits with overload indicator
• True balanced input
• Designed for stereo and multichannel monitoring
• Magnetically shielded for use near video monitors

The AOI is made up of a system that detects the movement of the membrane and the coil as well as a filtered counteraction. This is then tuned to achieve the ideal dampening rate for each frequency

The ALG is used in all regular 2-way and 3-way PSI Audio speakers. The shape and dimensions of the waveguide used in PSI Audio's custom tweeter is specially designed to optimize directivity as well as maximize sound-pressure level and extend bandwidth

The CPR system is made up of several all-pass filters, each acting in a specific range. Combined, they create a compensated phase response, which provides a constant group delay that is kept to the bare minimum through the entirely analog technology

The PSC technology enables remote activation and deactivation of the standby mode of your loudspeakers via the signal cable

Related Questions and Answers

Q: 1. Is a big difference between these and mr5 mk3 ? How about power consumption ?

A: The power consumption on the MR524 and MR5mkiii during loud music playback is the same; 90 watts. High's and low's are better reproduced over the MR524 nonetheless.

Q: 2. Do I need an audio box to power yamaha hs8 monitors?

A: The Yamaha HS8 are self powered monitor speakers. You would only need to input a line level audio signal via the available 1/4 or XLR connection on the rear panel.

Q: 3. These are 199$ each.... is your price for ONE speaker or a PAIR? Thanks! Gordy

A: The Yamaha HS5I are sold per unit and are not paired.

Q: 4. What is the difference between HS8I and HS8?

A: The HSI model has added mounting points to the original HS monitor, and is now compatible with three optional bracket types—wall, ceiling, and baton—adding the flexibility to accommodate a broad range of sonic environments.

Q: 5. Is there a way to use a Vesa mount with these speakers by themselves or in any combination with the brackets? Would like to attach them to a desk.

A: The following brackets are mane by Yamaha for this monitor• Baton bracket BBS251,• Ceiling bracket BCS251, • Wall bracket BWS251,• Wall bracket / ceiling bracket BWS50.See page 11,12 for instructions on mounting (https://usa.yamaha.com/files/download/other_assets/4/793644/hs8i_en_om_c0.pdf)

Q: 6. Can I get this bundle in the white variant? Not bothered about the woofer colour just the monitors . I know as singles they do come in a white though.

A: The white version is available I checked another reliable dealer but it is on backorder. suggest you call B&H and ask if and when it would be available they will be happy to contact our buyer for you.

Q: 7. Are these good for music production?

A: Yes, this monitor is good for music production., specifically, tracking and mixing, but not for mastering.

Q: 8. Do the transformer that power the class a/b amp hum?

A: No, the power transformer in the Mackie MR624 Powered Studio Monitor should not create hum.

Q: 9. power supply 110-220v?

A: The Yamaha HS8 powered studio monitors offered in the US operate at 120V only. They do not include a switchable power supply.

Q: 10. I'm undecided between Yamaha HS8 and JBL LSR 308? JBL is much cheaper but is Yamaha that much better than JBL? I'm a big fan of JBL but finally it's made in China.. Where is this product made?

A: Yamaha HS8 are currently made in Indonesia.