
VSX-921-K - съвременният ресивър, който посреща всички популярни AV изисквания на днешния потребител: 7.1 канален HD звук, цифрова връзка с iPod, iPhone и iPad, лесна връзка с домашната интернет мрежа. Допълнително получавате интернет радио и възпоризвеждане на LPCM, WAV, FLAC lossless музикални формати. Pioneer VSX-921-K има 6 HD входа 4 HDMI. Част от основните му характеристики са MCACC, PQLS и ASR за въстановяване качеството на компресираните формати. 2 години гаранционен срок.
Инструкция за употреба : Pioneer VSX-921-K
Main Features: Pioneer VSX-921-K
Output Power per Channel 150W
Impedance at Output Level 6Ω
Number of Channels 7
Signal / Noise Ratio 100 dB
Input Connections • 4 x HDMI (1080p upscaling)
• 5 x Composite
• 2 x Component
• 1 x Coaxial
• 2 x Optical
• 2 x USB host
• 1 x iPod/iPhone Digital via USB (cable included)
• 1 x Ethernet
• 1 x Bluetooth adapter port for AS-BT200
Output Connections • 1 x HDMI
• 1 x Composite
• 1 x Component
AM/FM Tuner with RDS Yes
Tuner Pre-set Stations 30
File Playback LPCM, MP3, WAV, AAC, WMA Lossless, Apple Lossless, FLAC
HD Audio Formats Dolby TrueHD, DTS-HD Master Audio
Audio Return Channel Yes
Stand-by Pass Through Yes
Control with HDMI Yes
HDMI Repeater Yes
On-Screen Display (GUI) Easy-to-use GUI, available in English, French, Italian, German, Spanish, Dutch and Russian
Firmware updates Yes (via Internet or USB)
AVNavigator Yes
Internet Radio Yes
vTuner Yes
DLNA Certified Yes (v1.5)
Remote Control Glow-key, preset remote control
Weight 9,9 kg
Dimensions (W x H x D) 435 x 168 x 362.5 mm
Input & Output connections
AV Front Input Yes
Bi-Amplifier Yes
Bluetooth Adapter Port Yes
Component Video Input/Output 2/1 (assignable)
Composite Input/Output 4/1
Digital Optical Input/Output 2/- (assignable)
Digital Coaxial Input/Output 1/-
Ethernet 1
HDMI Input/Output 4 (assignable)/1
HDMI version 1.4a
Headphone Yes
IR In/Out 1/1
Large speaker terminals Yes
Pre-amp Output Yes (SW)
USB Host (Front) Yes
Apple Compatibility
Works with iPod Yes (cable included)
Works with iPhone Yes
Works with iPad Yes
AirPlay Yes
Air Jam Yes
iPhone Control Button Yes
Compatible Generations • iPod: 5th Generation, Nano and above
• iPhone 3G, 3GS, 4
• iPad, iPad 2
Supported Functions • Audio & video playback
• On-screen album art
• Charging
Network Features
Wireless LAN Yes (with optional AS-WL300 adapter)
Surround Sound Formats
Dolby Digital Yes
Dolby Digital EX Yes
Dolby Digital Plus Yes
Dolby Pro Logic II Yes
Dolby Pro Logic IIx Yes
Dolby Pro Logic IIz Yes
Dolby True HD Yes
DTS Yes
DTS-ES Yes
DTS Neo: 6 Yes
DTS 96/24 Yes
DTS-Express Yes
DTS-HD High Resolution Audio Yes
DTS-HD Master Audio Yes
Surround Modes 15 + 1 (Action, Drama, Sci-Fi, Mono Film, Entertainment Show, Expanded Theater, TV Surround, Advanced Game, Sports, Classical, Rock/Pop, Unplugged, Extended Stereo, Front Stage Surround Focus, Front Stage Surround Wide + Phones Surround)
Audio Features
Auto Level Control Yes (Multi-channel)
Auto Surround Yes
Dialogue Enhancement Yes
Digital Noise Reduction Yes
DSD-to-PCM Convertor Yes (Multi-channel)
Dynamic Range Control Yes
Headphone Surround Yes
Front Stage Surround Advance Yes
Multizone Function Yes
Phase Control Yes
MCACC Yes (Advanced, 9-band)
PQLS Yes (Multi-channel)
Sound Delay (LipSync) Yes
Advanced Sound Retriever Yes (Multi-channel)
Sound Retriever AIR Yes
Standing Wave Control Yes
Stream Direct Yes
Symmetric EQ Yes
Virtual Surround Back Yes
Virtual Height Yes
X-Curve Yes
Video Features
Deep Colour Yes
3D Ready Yes
x.v.Colour Yes
HD Digital Film Direct 24 Yes
Upscaling to 1080p Yes
Advanced Video Adjust Yes
PureCinema Yes
Power Output
Power output per channel 135W
Condition 1kHz, 1% THD, 6Ω
Rated Power Output 150W per channel
Input (Sensitivity/Imp.): LINE 315 mV / 47kΩ
Frequency Response: LINE 5 Hz - 100 kHz +0/-3 dB
Signal-to-Noise Ratio: LINE (DIN) 100 dB
Power Requirements AC 220 - 230 V / 50/60 Hz
Power Consumption (in use / standby) 550 W / 0.30 W
Auto Power Down Yes
Construction
Design Discrete Amplification Type
Digital Signal Processor Freescale
Amplifier Specifications
D/A Converter 192 kHz / 24-bit
A/D Converter 96 kHz / 24-bit
Auto Level Control compensates for volume fluctuations between songs or sources, ensuring that what you hear is played back at a constant volume.
Digital filtering analyses signal output from each separate frequency band, then attenuates noise in each band to an optimal level. In this way, only signal band noise that detracts from overall sound is suppressed, without degrading any dynamic characteristics of the original sound.
The benefit here is that you don’t have to worry about routing
speaker cables around your room; your speakers can be placed up front.
Midnight Listening Mode is the solution. It adjusts subwoofer, rear and centre speaker levels, while enhancing delay and compressing dynamic range, for greater enjoyment of cinema-like sound at low volume.
For example, you can be watching a DVD movie with surround sound in the main room, while someone else can listen to a CD player in another, at the same time.
See how PQLS works
The benefit is that you can enjoy your digital music without loss of audio quality; the system automatically enhances and restores rich sound.
When audio is streamed using Bluetooth, sound quality is lost during transmission. Our Sound Retriever AIR brings back the original audio quality.
These acoustic waves create peaks in the low frequencies, resulting in a booming sound. Our Standing Wave Control neutralises this effect, by causing a flatter frequency response, while respecting the phase differences between each channel.
Since more filters are utilised in the lower bandwidths, up to 3 standing waves can be more precisely identified and reduced.
The result is a far better reproduction of lower frequencies.
Standing Wave Control is a feature of our MCACC system.
The default Symmetry setting implements symmetric correction for each pair of speakers to flatten the frequency-amplitude characteristics.
Once activated, the left and right rear satellite speakers will create a phantom sound source behind you. It will sound as if there are actual speakers behind you.
iControlAV is an application for iPhone or iPod touch that allows you to control your AV receiver or Blu-ray disc player. You need to connect your system and iPhone or iPod touch to a wireless router.
There are 4 screen modes:
- - Control mode provides control over the basic functions.
- - Precision mode is for sound enhancement; it also includes demo video clips to explain the benefits of these unique sound features.
- - Balance mode allows you to change the "sweet-spot" of your home theatre. just by tilting your iPhone or iPod touch.
- - Emphasis lets you independently adjust the volume of your centre speaker or subwoofer by tilting your iPhone or iPod touch.
Connect an optional Bluetooth adapter AS-BT100 to this port to access the Bluetooth features of your product.
A standard Ethernet cable looks like a telephone wire.
Depending on which model you choose, you could listen to Internet radio as well as enjoy your digital photos (JPEG images) and music stored on one or more network servers.
The benefit is an easy integration into your home network., for example
Temperature is a key factor since heat directly affects the amount of bias required by an output transistor to reproduce sound.
Our thermal compensation transistor provides transistor temperature feedback to the bias circuit, ensuring that the correct amount of bias is applied to the transistors, regardless of temperature.
Moreover, to enhance dissipation of heat, the output transistors Thermal Compensation Circuit are all mounted to the same portion of the heat sink.
The advantage is thorough reduction of the distortion by controlling bias current quickly in accordance with the change of the power transistor temperature. Secondly, there is an ultra short signal path by integrating major parts of the power amplification stage.
Depending on the speakers, the front left and right, centre, rear left and right speakers can span frequencies from 20 Hz - 20 kHz and there is a dedicated subwoofer channel for additional low frequency sound effects. Extra features mean not only stunning soundtracks but also additional language tracks on one disc.
By decoding the surround back channel from the left and right surround channels of 5.1 soundtracks, this additional surround back channel allows more detailed imaging behind the listener and brings more depth and better sound localisation than ever before, to give you the feel of 6.1 channels.
THX Surround EX/Dolby Digital EX is compatible with Dolby Digital 5.1, so that regular Dolby Digital decorder can decode EX signals as a normal 5.1 signal.
It is a development of the earlier Dolby Digital system. Compared to Dolby Digital, it supports a greater range of bitrates at higher quality and up to thirteen full range audio channels compared with Dolby Digital's original five.
Therefore when listening to typical two-channel sources like CD, the listener can enjoy a richer spatial effect. When using software encoded with Dolby Surround, this decoding system affords the listener an improved surround experience with greater sound detail.
Dolby Pro Logic IIx expands upon the popular Dolby Pro Logic II technology.
With Dolby Pro Logic IIx, these receivers have the ability to process 2- or 5-channel sources into 5.1 or 6.1- or 7.1- channel output according to the model and speaker configuration.
Dolby Pro Logic IIx creates a seamless, natural wraparound sound field that does not require specifically encoded programme content.
You can also enjoy improved surround envelopment, enhanced spatial depth, improved directionality and a larger 'sweet spot'.
Movie and Music modes can be used to match the sound experience even more closely to the source.
Three additional Music parameters are also available: Dolby Center Width (focuses the vocal balance to the centre and front), Dolby Panorama (creates a seamless surround effect) and Dolby Dimension (creates a deeper or shallower surround field).
Dolby Pro Logic IIz is based on Pro Logic IIx. It adds a height component, creating front height channels above the front left and right speakers. This expands a 5.1 or 7.1 system to 7.1 Height or 9.1.
It identifies low-level information such as ambience and weather sounds and directs it to the front height speakers.
Dolby TrueHD is an advanced lossless multi-channel audio codec from Dolby Laboratories.
DTS-HD Master Audio is also a lossless audio codec created by Digital Theater System (DTS).
Both codecs are intended primarily for high-definition home-entertainment equipment, such as Blu-ray Disc.
Put simply, the result is that you can now enjoy high resolution images accompanied by lush studio-quality HD sound.
DTS-ES Discrete provides 6.1 discrete channels, with a discretely recorded centre-surround channel. In home cinema systems with a 7.1 configuration, the two rear-centre speakers play in mono.
DTS-ES Matrix provides 5.1 discrete channels with a matrixed centre-surround audio channel. DTS-ES commonly works on a matrix system, whereby processors that are compatible with the ES codec look for and recognise "flags" built into the audio coding and "un-fold" the rear-centre sound from data that would otherwise be sent to rear surround speakers.
It also improves the separation between the different channels to almost the same level as that of a digital discrete system.
DTS NEO:6 Cinema Mode
decodes with an emphasis on separation performance to achieve the same atmosphere with 2-channel sources recorded in conventional surround formats as it does with 6.1-channel sources. The original 2-channel signal is distributed into 6 channels thanks to the sophisticated DTS matrix technology. Meanwhile, the effect of the surround signal output from the centre and surround channels adds a natural sense of expansion to the sound field.
DTS NEO:6 Music Mode
the front channel signals bypass the decorder and are played directly, so there is no loss of sound quality.
With its super low audio compression rate compatibility, both DTS 96/24 and traditional DTS-encoded audio discs will sound rich and sophisticated, with sound quality almost as high as on 96 kHz, 24-bit master tapes in the studio.
Backwards compatible with existing DTS decorders, the listener is also able to enjoy DTS 96/24 discs with receivers incorporating a standard DTS decorder.
DTS-HD High Resolution Audio is selected as an optional surround sound format for Blu-ray Disc with constant bit rates up to respectively 6.0 Mbit/s and 3.0 Mbit/s. It is supposed to be an alternative for DTS-HD Master Audio where disc space may not allow it.
Dolby TrueHD is an advanced lossless multi-channel audio codec from Dolby Laboratories.
DTS-HD Master Audio is also a lossless audio codec created by Digital Theater System (DTS).
Both codecs are intended primarily for high-definition home-entertainment equipment, such as Blu-ray Disc.
Put simply, the result is that you can now enjoy high resolution images accompanied by lush studio-quality HD sound.
The first digital surround sound coding technology for the Web, developed by Microsoft. When connected to a multi-channel-equipped PC, you are able to enjoy high resolution stereo or 5.1-channel surround audio at 128 k - 768 Kbps compression rates. At any given bit rate, 5-channel WMA9 Pro will bring you higher fidelity than other sound compression algorithms thanks to the latest audio codec technology.
Put simply, HD Digital Film Direct means “Master Quality”: what you see and hear on your flat-screen is exactly as the film-makers intended. Absolutely true to the original.
We’ve applied this standard as a label (see the logo on the right) to those of our products that accurately handle 24fps (frames per second) movie content; this will help you make the right product choice for the true HD movie experience.
Films are typically shot, developed and encoded for cinema reproduction at 24fps.
Regular PAL broadcasting and DVD have always played these images back at 25 fps (50Hz).
This has the effect of speeding up images and raising the pitch of sounds and voices.
But, the new high definition discs, like Blu-ray Disc, offer you access to a digitised ”true to the original” copy of the theatrical movie content.
We offer a product range that is perfectly matched for bringing the real cinema experience into your home: amplifiers, Blu-ray Disc players, home cinema systems and flat-screen TVs with our trademark screening of 24fps source input at 72Hz (3 images displayed per original frame).
MCACC stands for Multi-Channel Acoustic Calibration System.
It's an automatic sound field adjustment system that enables you to precision-tune your system to your living room, just like a sound professional, but with minimum effort.
A microphone monitors the sound environment and an equaliser (either 5 or 9-band, depending on which model of amplifier you have) optimally adjusts the sound parameters.
The result sounds like a professional recording engineer has fine-tuned your amplifier or home cinema system.
MCACC was created as a joint effort between ourselves and professional sound engineers at AIR Studios; it's unique to Pioneer, so you won't find it on any other products.
See how MCACC works
One remote for your full entertainment system.
KURO LINK is made possible via the single HDMI cable connection between your flat-screen TV and your other entertainment devices.
* Other brands of TV and home entertainment components also work with the KURO LINK function (here’s a list)
It enables increased contrast ratio, eliminates on-screen colour banding (for smooth tonal transitions and subtle gradations between colours) and can represent many times more shades of gray between black and white.
So what you see is as natural and lifelike as possible.
The result is that – on a compatible screen - you see greens, reds and blues far deeper than previously possible.
Auto Level Control compensates for volume fluctuations between songs or sources, ensuring that what you hear is played back at a constant volume.
The benefit here is that you don’t have to worry about routing
speaker cables around your room; your speakers can be placed up front.
Midnight Listening Mode is the solution. It adjusts subwoofer, rear and centre speaker levels, while enhancing delay and compressing dynamic range, for greater enjoyment of cinema-like sound at low volume.
For example, you can be watching a DVD movie with surround sound in the main room, while someone else can listen to a CD player in another, at the same time.
See how PQLS works
The benefit is that you can enjoy your digital music without loss of audio quality; the system automatically enhances and restores rich sound.
These acoustic waves create peaks in the low frequencies, resulting in a booming sound. Our Standing Wave Control neutralises this effect, by causing a flatter frequency response, while respecting the phase differences between each channel.
Since more filters are utilised in the lower bandwidths, up to 3 standing waves can be more precisely identified and reduced.
The result is a far better reproduction of lower frequencies.
Standing Wave Control is a feature of our MCACC system.
The default Symmetry setting implements symmetric correction for each pair of speakers to flatten the frequency-amplitude characteristics.
Once activated, the left and right rear satellite speakers will create a phantom sound source behind you. It will sound as if there are actual speakers behind you.

Temperature is a key factor since heat directly affects the amount of bias required by an output transistor to reproduce sound.
Our thermal compensation transistor provides transistor temperature feedback to the bias circuit, ensuring that the correct amount of bias is applied to the transistors, regardless of temperature.
Moreover, to enhance dissipation of heat, the output transistors Thermal Compensation Circuit are all mounted to the same portion of the heat sink.
The advantage is thorough reduction of the distortion by controlling bias current quickly in accordance with the change of the power transistor temperature. Secondly, there is an ultra short signal path by integrating major parts of the power amplification stage.
Depending on the speakers, the front left and right, centre, rear left and right speakers can span frequencies from 20 Hz - 20 kHz and there is a dedicated subwoofer channel for additional low frequency sound effects. Extra features mean not only stunning soundtracks but also additional language tracks on one disc.
By decoding the surround back channel from the left and right surround channels of 5.1 soundtracks, this additional surround back channel allows more detailed imaging behind the listener and brings more depth and better sound localisation than ever before, to give you the feel of 6.1 channels.
THX Surround EX/Dolby Digital EX is compatible with Dolby Digital 5.1, so that regular Dolby Digital decorder can decode EX signals as a normal 5.1 signal.
It is a development of the earlier Dolby Digital system. Compared to Dolby Digital, it supports a greater range of bitrates at higher quality and up to thirteen full range audio channels compared with Dolby Digital's original five.
Therefore when listening to typical two-channel sources like CD, the listener can enjoy a richer spatial effect. When using software encoded with Dolby Surround, this decoding system affords the listener an improved surround experience with greater sound detail.
Dolby Pro Logic IIx expands upon the popular Dolby Pro Logic II technology.
With Dolby Pro Logic IIx, these receivers have the ability to process 2- or 5-channel sources into 5.1 or 6.1- or 7.1- channel output according to the model and speaker configuration.
Dolby Pro Logic IIx creates a seamless, natural wraparound sound field that does not require specifically encoded programme content.
You can also enjoy improved surround envelopment, enhanced spatial depth, improved directionality and a larger 'sweet spot'.
Movie and Music modes can be used to match the sound experience even more closely to the source.
Three additional Music parameters are also available: Dolby Center Width (focuses the vocal balance to the centre and front), Dolby Panorama (creates a seamless surround effect) and Dolby Dimension (creates a deeper or shallower surround field).
Dolby TrueHD is an advanced lossless multi-channel audio codec from Dolby Laboratories.
DTS-HD Master Audio is also a lossless audio codec created by Digital Theater System (DTS).
Both codecs are intended primarily for high-definition home-entertainment equipment, such as Blu-ray Disc.
Put simply, the result is that you can now enjoy high resolution images accompanied by lush studio-quality HD sound.
DTS-ES Discrete provides 6.1 discrete channels, with a discretely recorded centre-surround channel. In home cinema systems with a 7.1 configuration, the two rear-centre speakers play in mono.
DTS-ES Matrix provides 5.1 discrete channels with a matrixed centre-surround audio channel. DTS-ES commonly works on a matrix system, whereby processors that are compatible with the ES codec look for and recognise "flags" built into the audio coding and "un-fold" the rear-centre sound from data that would otherwise be sent to rear surround speakers.
It also improves the separation between the different channels to almost the same level as that of a digital discrete system.
DTS NEO:6 Cinema Mode
decodes with an emphasis on separation performance to achieve the same atmosphere with 2-channel sources recorded in conventional surround formats as it does with 6.1-channel sources. The original 2-channel signal is distributed into 6 channels thanks to the sophisticated DTS matrix technology. Meanwhile, the effect of the surround signal output from the centre and surround channels adds a natural sense of expansion to the sound field.
DTS NEO:6 Music Mode
the front channel signals bypass the decorder and are played directly, so there is no loss of sound quality.
With its super low audio compression rate compatibility, both DTS 96/24 and traditional DTS-encoded audio discs will sound rich and sophisticated, with sound quality almost as high as on 96 kHz, 24-bit master tapes in the studio.
Backwards compatible with existing DTS decorders, the listener is also able to enjoy DTS 96/24 discs with receivers incorporating a standard DTS decorder.
DTS-HD High Resolution Audio is selected as an optional surround sound format for Blu-ray Disc with constant bit rates up to respectively 6.0 Mbit/s and 3.0 Mbit/s. It is supposed to be an alternative for DTS-HD Master Audio where disc space may not allow it.
Dolby TrueHD is an advanced lossless multi-channel audio codec from Dolby Laboratories.
DTS-HD Master Audio is also a lossless audio codec created by Digital Theater System (DTS).
Both codecs are intended primarily for high-definition home-entertainment equipment, such as Blu-ray Disc.
Put simply, the result is that you can now enjoy high resolution images accompanied by lush studio-quality HD sound.
The first digital surround sound coding technology for the Web, developed by Microsoft. When connected to a multi-channel-equipped PC, you are able to enjoy high resolution stereo or 5.1-channel surround audio at 128 k - 768 Kbps compression rates. At any given bit rate, 5-channel WMA9 Pro will bring you higher fidelity than other sound compression algorithms thanks to the latest audio codec technology.
Put simply, HD Digital Film Direct means “Master Quality”: what you see and hear on your flat-screen is exactly as the film-makers intended. Absolutely true to the original.
We’ve applied this standard as a label (see the logo on the right) to those of our products that accurately handle 24fps (frames per second) movie content; this will help you make the right product choice for the true HD movie experience.
Films are typically shot, developed and encoded for cinema reproduction at 24fps.
Regular PAL broadcasting and DVD have always played these images back at 25 fps (50Hz).
This has the effect of speeding up images and raising the pitch of sounds and voices.
But, the new high definition discs, like Blu-ray Disc, offer you access to a digitised ”true to the original” copy of the theatrical movie content.
We offer a product range that is perfectly matched for bringing the real cinema experience into your home: amplifiers, Blu-ray Disc players, home cinema systems and flat-screen TVs with our trademark screening of 24fps source input at 72Hz (3 images displayed per original frame).
MCACC stands for Multi-Channel Acoustic Calibration System.
It's an automatic sound field adjustment system that enables you to precision-tune your system to your living room, just like a sound professional, but with minimum effort.
A microphone monitors the sound environment and an equaliser (either 5 or 9-band, depending on which model of amplifier you have) optimally adjusts the sound parameters.
The result sounds like a professional recording engineer has fine-tuned your amplifier or home cinema system.
MCACC was created as a joint effort between ourselves and professional sound engineers at AIR Studios; it's unique to Pioneer, so you won't find it on any other products.
See how MCACC works
One remote for your full entertainment system.
KURO LINK is made possible via the single HDMI cable connection between your flat-screen TV and your other entertainment devices.
* Other brands of TV and home entertainment components also work with the KURO LINK function (here’s a list)
It enables increased contrast ratio, eliminates on-screen colour banding (for smooth tonal transitions and subtle gradations between colours) and can represent many times more shades of gray between black and white.
So what you see is as natural and lifelike as possible.
The result is that – on a compatible screen - you see greens, reds and blues far deeper than previously possible.









