Phono Preamplifiers

Today, many amplifiers do not have a specific phono cartridge input. Phono Box E is an ideal phono preamplifier for these hifi systems. Phono Box E accepts MM cartridges and offers an audiophile music experience at an entry-level price. Advanced circuitry and SMD construction keep noise and distortion at a surprisingly low level. A built-in internal shielding and an outboard DC power supply leave no risk for external interference. Because of its small casing, Phono Box E can be placed near the turntable. Input and output sockets are gold-plated for preservation of quality. Phono Box E can be connected easily to a line-input (AUX etc) of your amplifier.   Features:Amplification and RIAA equalisation for MM cartridges  Design principle inspired by Dr. Sykora  SMD circuitry  Special low noise components  Internal metal shielding  Small size allows installation close to record player  Gold plated RCA connection sockets  Outboard power supply included  ​Specifications:Input impedance: 47kohmsInput capacitance: 120pFGain: 40dBOutput voltage(typically): 500mV @ 1KhZ with 5mV inputNoise floor: 88dB (A weighted)THD:

Record Box E is an high-quality phono preamplifier, that offers the possibility to convert your valuable vinyls into computer music data. Re-cord Box E accepts both MM & MC cartridges and gives audiophile music experience at an entry-level price. The integrated A/D converter operates with Windows and MAC operating systems and connects via USB to your computer. Therefore your valuable vinyl collection can be digitised, especially for use in portable music players. Advanced circuitry and SMD construction keep noise and distortion at a surprisin-gly low level. A built-in internal shielding and an outboard DC power supply leave no risk for external interference. Because of its small casing, Record Box E can be placed near the turntable. Input and output sockets are gold-plated for preservation of quality. Record Box E can be connected easily to a line-input (AUX etc) of your amplifier.   Features:Amplification and RIAA equalisation for MM & MC  Design principle inspired by Dr. Sykora  Digitalisation of vinyl for recording direct to USB with suitable recording programs  Automatic recognition, no additional drivers needed  Runs on Windows®, Mac OS® & Linux operating systems  SMD circuitry with special low noise components  Internal metal shielding  Small size allows installation close to record player  Gold plated RCA connection sockets  Outboard power supply included  Black casing  ​Specifications:Input capacitance/input impedance: MC: 100ohms/120pF (low output MC)-MM: 47kohms/120pF (MM or high output MC)Gain, MM / MC: 40dB / 60dBOutput voltage typically: 300mV/1kHz at 3mV/1kHz (MM) or 0,3mV/1kHz (MC)Max. output: 9,5V (1kHz)Noise floor MM / MC: 94dB (A weighted) / 75dB (A weighted)THD MM / MC:

Record Box E is an high-quality phono preamplifier, that offers the possibility to convert your valuable vinyls into computer music data. Re-cord Box E accepts both MM & MC cartridges and gives audiophile music experience at an entry-level price. The integrated A/D converter operates with Windows and MAC operating systems and connects via USB to your computer. Therefore your valuable vinyl collection can be digitised, especially for use in portable music players. Advanced circuitry and SMD construction keep noise and distortion at a surprisin-gly low level. A built-in internal shielding and an outboard DC power supply leave no risk for external interference. Because of its small casing, Record Box E can be placed near the turntable. Input and output sockets are gold-plated for preservation of quality. Record Box E can be connected easily to a line-input (AUX etc) of your amplifier.   Features:Amplification and RIAA equalisation for MM & MC  Design principle inspired by Dr. Sykora  Digitalisation of vinyl for recording direct to USB with suitable recording programs  Automatic recognition, no additional drivers needed  Runs on Windows®, Mac OS® & Linux operating systems  SMD circuitry with special low noise components  Internal metal shielding  Small size allows installation close to record player  Gold plated RCA connection sockets  Outboard power supply included  White casing  ​Specifications:Input capacitance/input impedance: MC: 100ohms/120pF (low output MC)-MM: 47kohms/120pF (MM or high output MC)Gain, MM / MC: 40dB / 60dBOutput voltage typically: 300mV/1kHz at 3mV/1kHz (MM) or 0,3mV/1kHz (MC)Max. output: 9,5V (1kHz)Noise floor MM / MC: 94dB (A weighted) / 75dB (A weighted)THD MM / MC:

RIAA Phono Preamplifier This phono preamplifier for Moving Magnet (MM) and Moving Coil (MC) pickup systems is based on the legendary Douglas-Self-Design. MM & MC There are two pickup systems for record players: Moving Magnet (MM) and Moving Coil (MC). Moving Magnet Moving magnet pickups generate a small voltage by moving a magnet between copper coils. MM pickups have a very high inductance and impedance. The Phonos offers a choice of three capacitors to correct the linearity of the frequency and phase response. The capacitances are 150pF, 220pF and 330pF. In the off-position the capacitance is determined by the capacitance of the cable. Moving Coil The MC pickup is also a small electromagnetic generator, but with the magnets firmly anchored and the coils moving between them, i.e. exactly the opposite of the MM pickup. The output voltage, however, is very low at only a few hundred microvolts and is therefore more sensitive to noise and induced hum. This makes preamplifier design a challenge, because the very low output voltage must be pre-amplified extremely noise-free. Phonos offers one of the most powerful phono preamplifiers for MC systems with up to 71.5 dB preamplification. Thanks to the 120V technology, the preamplifiers are extremely low-noise, linear and phase-locked. MC pickups have a very low inductance and impedance. This means that the effects of cable capacitance (from turntable to preamplifier) are negligible. The impedance, however, is relevant and can be set in six positions: 100, 220, 470, 2.2 k, 4.7 k, and 10 kOhm. If there is any doubt as to which impedance matches that of the pickup, the impedances can also simply be switched through until the linear frequency response is acoustically determined. Amplification The pre-amplification can be switched in three values. The normal gain value is +46 dB for MM and +67 dB for MC cartridges. In the -10 dB position, the phono produces enough output level for normal hi-fi equipment operating at a reference level of -10 dBV. In the +4 dB position, the output level is about as loud as that of modern DA converters at a reference level of 0dBfs = +15 dBu. Subsonic Filter The rumbling of the turntable’s drive mechanism is also amplified by the high amplification of the bass range due to RIAA equalization in playback. The Phonos offers a switchable subsonic filter to remove this rumble.  Connections Gold-plated RCA sockets are available for connecting the turntable and for outputting to a preamplifier such as the Director Mk2 or the Elector.  A ground connection for the turntable is designed as banana plug socket. The ground lead can be either clamped or plugged in. RIAA Equalization RIAA equalization is a specification for the recording and playback of records proposed by the Recording Industry Association of America (RIAA). The RIAA equalization curves introduced a global de facto industry standard for vinyl records in 1954. RIAA equalization uses pre-emphasis to reduce low frequencies and boost high frequencies when the record is cut (blue RIAA curve). The bass is reduced by up to 20 dB to provide more space and longer record play time. The high frequencies are boosted by up to 25 dB to increase the signal-to-noise ratio between the noise and the hot of the record media to the audio signal. During playback, exactly the opposite happens in the phono. The de-emphasis filter (red RIAA curve) compensates for the pre-emphasis and the result is a linear frequency response. Douglas Self Design The RIAA equalization of the phono was developed according to the recommendations of Douglas Self. Idea: Many small capacities instead of a few large capacities. Advantages: The capacitors charge and discharge faster, which results in better resolution and faster impulse response. Only audiophile Styroflex capacitors are used in the entire RIAA equalizer. About the person: Douglas Self is a British electronics engineer with a strong penchant for audio. He holds honorary degrees from Cambridge University and teaches psychoacoustics at the University of Sussex. Specifications: Analog Input & Output: RCA Input impedance (MM): 47 kΩ Input impedance (MC): switchable Output impedance: 75 Ω Frequency range (-3 dB): 4 Hz – 300 kHz Crosstalk (1 kHz): -80 dBu Moving Magnet (MM) Preamplifier Amplification (Norm): 46 dB Amplification (-10 dB): 36 dB Amplification (+4 dB): 50 dB Capacitance (switchable): Off, 150 pF, 220 pF and 330 pF Noise (A-weighted; 46 dB amplification): -85.3 dBu Dynamic range: 131.3 dB Moving Coil (MC) Preamplifier Amplification (Norm): 67 dB Amplification (-10 dB): 56 dB Amplification (+4 dB): 71.5 dB Impedance (switchable): 100 Ω, 220 Ω, 470 Ω, 2.2 kΩ, 4.7 kΩ, 10 kΩ Noise (A-weighted, 67 dB amplification): -61.7 dBu Dynamic range: 128.7 dB Internal Linear Power Supply with Shielded Toroidal Transformer Operating voltage for analog audio: +/- 60 V Operating voltage for relays and LEDs: + 12 V Mains Power Supply Mains voltage (selectable, see fuse chamber): 230 V AC / 50; 115 V AC / 60 Hz Fuse for 230 V: T 500 mA Fuse for 115 V: T 1 A Power consumption: max. 30 VA Stand-by power consumption: < 0,3 W Dimensions & Weight W x H x D (width x height incl. feet x depth): 278 x 100 x 330 mm Unit weight: 3.2 kg Shipping weight (incl. packaging): 4.3 kg

The MX-VYNL is a fully balanced, very high performance phono stage, able to operate with virtually any moving coil or moving magnet cartridge. With both traditional RCA inputs and our unique XLR fully balanced connection the MX-VYNL can be connected to 2 turntables simultaneously.The MX-VNYL offers a wide range of input impedance settings for moving coil cartridges as well as several capacitance settings for moving magnet units. Unlike many of our competitors units the MX-VYNL allows easy adjustment of these settings while playing. This allows easy experimentation and tuning to find the optimum setting for all your equipment.The MX-VYNL also includes our renowned RIAA correction that offers extremely accurate results to beyond 80kHz. That may sound extreme, but there is a good deal of information above 20 kHz that needs correction. If it isn’t corrected, it will show itself as ringing and overshoot.With both extraordinarily low noise and exceptional overload margin the MX-VYNL can comfortably handle even the most demanding of cartridges and satisfy the most discerning of listeners.Features:Fully balanced XLR and traditional RCA inputsFully balanced XLR and traditional RCA outputsFully isolated inputs allow for switching between two turntables at onceAdjustable input impedance on MC whilst it is playingAdjustable capacitance on MM whilst it is playingVery wide overload marginAccurate RIAA to beyond 80kHzIncredible noise ratioLow impedance outputState of the art SMD technologyBeautiful aesthetics and build quality

The MX-VYNL is a fully balanced, very high performance phono stage, able to operate with virtually any moving coil or moving magnet cartridge. With both traditional RCA inputs and our unique XLR fully balanced connection the MX-VYNL can be connected to 2 turntables simultaneously.The MX-VNYL offers a wide range of input impedance settings for moving coil cartridges as well as several capacitance settings for moving magnet units. Unlike many of our competitors units the MX-VYNL allows easy adjustment of these settings while playing. This allows easy experimentation and tuning to find the optimum setting for all your equipment.The MX-VYNL also includes our renowned RIAA correction that offers extremely accurate results to beyond 80kHz. That may sound extreme, but there is a good deal of information above 20 kHz that needs correction. If it isn’t corrected, it will show itself as ringing and overshoot.With both extraordinarily low noise and exceptional overload margin the MX-VYNL can comfortably handle even the most demanding of cartridges and satisfy the most discerning of listeners.Features:Fully balanced XLR and traditional RCA inputsFully balanced XLR and traditional RCA outputsFully isolated inputs allow for switching between two turntables at onceAdjustable input impedance on MC whilst it is playingAdjustable capacitance on MM whilst it is playingVery wide overload marginAccurate RIAA to beyond 80kHzIncredible noise ratioLow impedance outputState of the art SMD technologyBeautiful aesthetics and build quality

The spawn of the Manley Steelhead - one of the world's greatest phono preamplifiers - Stereophile Class A Recommended Component and The Absolute Sound's Preamp of the Year, has arrived. The Chinook epitomizes the sound of the Steelhead. Designed for the music lover, not the switch tweaker. Setting up the Chinook couldn't be easier. There are two internal settings for optimal gain: 45dB for Moving-Magnet cartridges and 60dB for Moving-Coil cartridges. Set it and forget it! The back panel contains DIP switches for adjusting the input resistive and capacitance loading values. 31 possible options between 26 and 800 Ohms plus 47k Ohms and 7 capacitive loading choices between 50 pF and 350 pF provide flexibility to match any cartridge and fine tune the tone.Specifications:Gain: Internal DIP switches select 45dB or 60dBDeviation from RIAA curve: Less than ± 0.5 dB from 20Hz to 20kHz at any gain setting. Typically less than ±1dB from 10Hz to 100kHz.Distortion (THD+N) (47k Ohm Input Termination, 45dB gain, 1kHz sine, 0dBu output): Typical 0.010% THD+N, into 100k Ohm load, BW = 100Hz-22kHzDistortion (THD+N) (47k Ohm Input Termination, 45dB gain, 1kHz sine, 0dBu output): Typical 0.030% THD+N, into 600 Ohm load, BW = 100Hz-22kHzDynamic Range (MM input, Gain set to 45db, 200 Ohm source): 91dB  1kHz, 0.1% THD+N, BW = 22Hz-22kHzDynamic Range (MM input, Gain set to 45db, 200 Ohm source): 107dB  1kHz, 1.0% THD+N, BW = 22Hz-22kHzNoise Floor at 45dB gain setting with shorted input: -84 dBu, A-weightedNoise Floor at 60dB gain setting with shorted input: -75 dBu, A-weightedMaximum Input at 45dB gain setting with 20 Ohm Source Z  1kHz into 10 kOhm load: 250mV RMS = +34.5 dBu  1% THD+N BW=22Hz-22kHzMaximum Input at 60dB gain setting with 20 Ohm Source Z  1kHz into 10 kOhm load: 40mV RMS = +34.2 dBu  1% THD+N BW=22Hz-22kHzMaximum Output: +37dBu  1kHz, 1.5% THD+N into 100 kOhm loadOutput Impedance: 91 OhmsMinimum Recommended Load: 2500 OhmsInternal Power Supply: Fully regulated linear B+, Heater, and control voltage rails.Operating Mains Voltage: Units are built for original destination country's mains voltage: 100V, 120V, or 220-240VAC as indicated on the serial number badge.Power Consumption in Standby mode: 1 Watt (8.0mA  120VAC)Power Consumption: 42 Watts (345mA  120VAC)Mains Voltage Frequency: 50~60HzPower Transformer: Toroid contruction for low radiation.Mains Fuse for 100V operation:800mA SLO-BLO Glass Littlefuse Series 239 size 5mm x 20mmMains Fuse for 117V-120V operation:800mA SLO-BLO Glass Littlefuse Series 239 size 5mm x 20mmMains Fuse for 220V-240V operation:400mA SLO-BLO Glass Littlefuse Series 239 size 5mm x 20mmStandby Transformer Fuse for all voltage operation 100V-240V: 10mA, SLO-BLO, MDL type size 1/4" x 1 1/4"Badge Lamp: LED illuminationDimensions: W=19", L=11", H=3 1/2"Shipping Weight: 15 Lbs.

It has two Moving Coil inputs with selectable impedance load 25, 50, 100, 200 and 400 Ohms via Mr. Clever "Steelhead" transformer/autoformer. It also has variable and selectable Moving Magnet input impedances too 25, 50, 100, 200 Ohms and 47 kOhms. It's got six tubes. 2 x 6922 plus 4 x 7044 (or 5687). It's got a big honkin' volume control. It can drive an amplifier directly if you want, if you don't "do" digital. Hey and if you happen to have three turntables set up, we give you 2 x MC and 1 x MM selectable inputs. It's got selectable gain 50, 55, 60, 65dB on a switch that even auto-mutes as you change it so no nasty bangs. Gain switch markings are referred to from the input of the 1st active electronics at 1 kHz to the fixed output @ 10k load, regardless of whether source is MM or XFMR stepped-up MC. Specifications: Vacuum tube complement: 6922 SOVTEK Russian x 2 (gain) plus JAN NOS GE 7044 or 5687 x 4 (output buffers) Fuse type and ratings 117 VAC operation: MAINS fuse: 1.6 Amp 3AG slow-blow use glass body Littlefuse Series 239 LOGIC fuse: 0.5 Amp 3AG slow-blow logic fuse Fuse type and ratings 230 VAC operation: MAINS fuse: 0.800 Amp 3AG slow-blow use glass body Littlefuse Series 239 LOGIC fuse: 0.25 Amp 3AG slow-blow logic fuse Moving Magnet input impedance: 5-step user adjustable via fixed low-noise resistors. 25, 50, 100, 200 and 47000 Ohms. Moving Coil input impedance: 5-step user adjustable via multi-tap autoformer: 25, 50, 100, 200 and 400 Ohms. Input Termination Capacitance: Front Panel Selectable in 10 picofarad steps from 10 to 1100 pF (1.1nF) Residual input capacitance less than 40 pF. Gain: 4-step user adjustable, 50, 55, 60 and 65 dB active gain at 1 kHz referred to the FIXED output jack into a 10 kOhm load. Additional gain available via the MC input's step-up autoformer. See Owner's Manual for discussion. Deviation from RIAA curve: Less than +0.5 / -0.3 dB from 20 Hz to 20 kHz at any gain setting. Typically less than ±1 dB from 10 Hz to 100 kHz Inter-channel differential phase: Less than 4 degrees from 20 Hz to 20 kHz at any gain setting. Typically less than 2 degrees. Inter-channel differential gain: Less than ±0.5 dB from 20 Hz to 20 kHz at any gain setting. Dynamic Range: 101 dB 1 kHz, 1% THD measured with 200 Ohm source, 47 kOhm input, 55dB Gain 97 dB 1 kHz, 0.1% THD THD: 0.0042% at 1V output 1kHz REMORA RF REMOTE: controls motorised volume control up/down functions; uses 9v battery Maximum LINE input level: +30.6dBu 1KHz for an output of +29.3dBu 0.07% THD 26.5Vrms 1KHz for an output of 22.8Vrms 0.07% THD Maximum Output: +27dBm 1KHz with 3% THD into 100 kOhm load FIXed Output impedance: 150 Ohms. Minimum suggested load greater than 1500 Ohms. VARIable Output impedance: 75 Ohms. Minimum suggested load greater than 600 Ohms.

Do you have a turntable, but no phono input on your receiver, integrated amp, or shelf system? Or, does your system&#39;s built-in phono stage sound flat and lifeless? No problem — just hook up the Pro-Ject Phono Box DC preamplifer in-line between your record player and any of your receiver&#39;s line-level inputs, and you&#39;re ready to enjoy your LP collection all over again. Pro-Ject&#39;s clean, simple design uses premium quality parts to deliver the warm, relaxed sound that vinyl is famous for. Its compact all-metal body rejects interference to ensure clean sound, and the gold-plated inputs and outputs resist corrosion for the best possible signal transfer. This preamp is compatible with both moving magnet and moving coil cartridges, so you can count on proper matching with virtually any turntable and cartridge combination.Specifications:compatible with moving magnet and moving coil phono cartridgesexternal power supply for reduced noise and interferencegold-plated input and output jacks for solid, corrosion-free connectionsdual-mono circuitry for optimal channel separationsmall size allows placement near turntableinput impedance: 47 kohms/120pF (MM); 100ohms/120pF (MC)gain: 40dB (MM); 60dB (MC)signal-to-noise ratio: 86dB (MM); 68dB (MC)THD: 0.01% (MM); 0.05% (MC)RIAA response accuracy: 0.5dB (20-20,000 Hz)4-1/8"W x 1-1/2"H x 5-3/8"D

Do you have a turntable, but no phono input on your receiver, integrated amp, or shelf system? Or, does your system&#39;s built-in phono stage sound flat and lifeless? No problem — just hook up the Pro-Ject Phono Box DC preamplifer in-line between your record player and any of your receiver&#39;s line-level inputs, and you&#39;re ready to enjoy your LP collection all over again. Pro-Ject&#39;s clean, simple design uses premium quality parts to deliver the warm, relaxed sound that vinyl is famous for. Its compact all-metal body rejects interference to ensure clean sound, and the gold-plated inputs and outputs resist corrosion for the best possible signal transfer. This preamp is compatible with both moving magnet and moving coil cartridges, so you can count on proper matching with virtually any turntable and cartridge combination.Specifications: Preamplifier for MM or MC with switch on rear panel   NEW „green“ DC power supply (< 1 watt standby power)   Precise RIAA equalisation   High quality A/D conversion with USB out to PC/Mac   Compatible with Windows®, MacOS®   SMD technology for shortest signal paths   Gold-plated RCA sockets   Output stage with ultra-low impedance   Available in black and silver

Do you have a turntable, but no phono input on your receiver, integrated amp, or shelf system? Or, does your system&#39;s built-in phono stage sound flat and lifeless? No problem — just hook up the Pro-Ject Phono Box DC preamplifer in-line between your record player and any of your receiver&#39;s line-level inputs, and you&#39;re ready to enjoy your LP collection all over again. Pro-Ject&#39;s clean, simple design uses premium quality parts to deliver the warm, relaxed sound that vinyl is famous for. Its compact all-metal body rejects interference to ensure clean sound, and the gold-plated inputs and outputs resist corrosion for the best possible signal transfer. This preamp is compatible with both moving magnet and moving coil cartridges, so you can count on proper matching with virtually any turntable and cartridge combination.Specifications: Preamplifier for MM or MC with switch on rear panel   NEW „green“ DC power supply (< 1 watt standby power)   Precise RIAA equalisation   High quality A/D conversion with USB out to PC/Mac   Compatible with Windows®, MacOS®   SMD technology for shortest signal paths   Gold-plated RCA sockets   Output stage with ultra-low impedance   Available in black and silver

Do you have a turntable, but no phono input on your receiver, integrated amp, or shelf system? Or, does your system&#39;s built-in phono stage sound flat and lifeless? No problem — just hook up the Pro-Ject Phono Box DC preamplifer in-line between your record player and any of your receiver&#39;s line-level inputs, and you&#39;re ready to enjoy your LP collection all over again. Pro-Ject&#39;s clean, simple design uses premium quality parts to deliver the warm, relaxed sound that vinyl is famous for. Its compact all-metal body rejects interference to ensure clean sound, and the gold-plated inputs and outputs resist corrosion for the best possible signal transfer. This preamp is compatible with both moving magnet and moving coil cartridges, so you can count on proper matching with virtually any turntable and cartridge combination.Specifications:compatible with moving magnet and moving coil phono cartridgesexternal power supply for reduced noise and interferencegold-plated input and output jacks for solid, corrosion-free connectionsdual-mono circuitry for optimal channel separationsmall size allows placement near turntableinput impedance: 47 kohms/120pF (MM); 100ohms/120pF (MC)gain: 40dB (MM); 60dB (MC)signal-to-noise ratio: 86dB (MM); 68dB (MC)THD: 0.01% (MM); 0.05% (MC)RIAA response accuracy: 0.5dB (20-20,000 Hz)4-1/8"W x 1-1/2"H x 5-3/8"D

The V90-LPS is an outstanding phone stage / amplifier designed to provide the ideal interface between high performance turntables and Hi-Fi amplifiers. Its signal path has been designed to offer a clean and transparent connection for your music to ensure it is heard exactly as the artist intended.Housed in a sleek, attractive case the V90-LPS balances high-end performance with incredible value and is the perfect partner for a wide range of turntables. It’s separate Moving Magnet (MM) and Moving Coil (MC) inputs are each tuned to offer the best possible performance from their respective cartridges and convey a startlingly realistic audio performance. While the V90-LPS offers an outstanding musical experience it also represents amazing value for money. Listeners can look forward to hours of listening pleasure that is usually only delivered by considerably more expensive products.Specifications:PerformanceInput impedance: 47kOhm (MM), 100Ohm (MC)Input sensitivity: 3.0mV (MM), 400µV (MC) - for 300mV outTotal harmonic distortion: 0.01% (MM/MC) - @ 1kHz, 300mV outFrequency Response: +0, –0.1dB, 20Hz to 20 kHzSignal / Noise ratio (A weighted): >80dB (MM), >80dB (MC)Input overload margin: 15dB (MM), 22dB (MC)RIAA response: +/- 0.25dBConnectionsMM: 1 pair RCA socketsMC: 1 pair RCA socketsLine level outputs: 1 pair RCA socketsPower input: 1.3mm DC power socketOutputs1x line level RCA (phono)GeneralDimensions (inc. terminals & feet) - WxHxD (mm): 170 x 47 x 102Weight (unpacked / packed): 600g / 1.1 kgSupplied Accessories1x 12v 500mA DC power supply  

Προενισχυτής phono ΜΜ με θύρα usb για να αποθηκεύσετε τα βινύλια σας σε mp3.

Προενισχυτής phono ΜΜΠροδιαγραφές:Input 3,4 mV/47 KOhmOutput 300 mV/1 KOhm. Frequency responce: 20 Hz-20 KHz +-0,5 dB.. S/N Ratio>85 dBWeight: 0,3kg