This auction is for a Pair of ZENITH type 35C5 Vintage used Radio Vacuum Tubes These are similar to a 50C5 tube (but a slightly lower filament voltage) and are used in some AA5 tube sets in vintage radios the tubes have been tested on my reconditioned Mercury tube tester and test in the good range so should work Please look at the pictures carefully to confirm the physical specs/details and ask any questions to confirm before bidding. buy NOW before anyone else bids! Buyer pays $6.99 SHIPPING TO ANY CONTINENTAL USA ADDRESS International shipping is through ebay Global Shipping only Payment MUST be received within 48 hours of end of auction. All Items sold asis. All Sales final. Please ask any questions before bidding

Home - Hifi Autoradios / Moniceiver DVD / DVB-T / Multimedia Lautsprecher / Verstärker iPod / iPhone / USB-Interface Freisprech-einrichtung Marine Audio Navigations- software Navigations- systeme Zubehör / Sonstiges https://media.kolumbus24.com/articlePics/635px/ iFi-Audio ZEN CAN - vollsymmetrischer Kopfhörerverstärker (1600 mW / Class A Ausgangsstufe / xBASS / 3D Sound / inkl. Netzteil) Kopfhörerverstärker Hersteller: iFi-Audio Artikel-Nummer: 11008726 EAN-Nummer: 5060738783212 Artikelbeschreibung Article Description Highlights vollsymmetrischer Kopfhörerverstärker diskrete Class-A-Schaltung voll symmetrisches Dual-Mono-Design XBass® und 3D Holographic® Produktbeschreibung ifi Audio ZEN CAN – vollsymmetrischer Kopfhörerverstärker 1600 mW Laptops, Tablets oder Smartphones haben eine niedrige Leistungsabgabe von nur ca. 1V. Bei guten Kopfhörern fehlt Ihnen hier die Power. Sie werden niemals das hören was Ihr Kopfhörer leisten kann. Wenn Sie das analoge Ausgangssignal des Laptops, Tablets oder Smartphones in den ZEN CAN einspeisen können Sie das 52-fache an Leistung erhalten. Sie werden jetzt hören was Sie verpasst haben. Der ZEN CAN verfügt über eine diskret aufgebaute, symmetrische Verstärkerschaltung in Class-A die aus dem teuren Flaggschiff iFi PRO iCAN stammt. Mit 15,1 Volt an 300 Ohm verfügt er über eine Leistung die selbst schwer anzusteuernde Kopfhörer zum spielen bringt. Extrem geringe Verzerrung und Rauschen durch ein Schaltungsdesign, das vom ifi Audio Flaggschiff-Kopfhörerverstärker inspiriert ist, der eine dedizierte Eingangsstufe verwendet, deren Pegel zu Ihrer Quelle passt, sodass das Signal frei durch die Klasse-A-Ausgangsstufe fließen kann, buchstäblich Musik in Ihren Ohren. Maximieren Sie die Leistung Ihrer Kopfhörer, mehr als nur laut zu werden, sondern den vollen Dynamikbereich der Treiber zu realisieren und sanfte Vocals sowie herzklopfende Drums zu erleben, ohne einen Beat zu verpassen. Liefert bis zu 1600 mW Leistung an 16 Ohm. Verbessert mit der charakteristischen analogen Signalverarbeitung, um durch XBass präzisere und natÜrlichere Bassfrequenzen zu liefern und eine breitere KlangbÜhne zu präsentieren, die die Musik durch die 3D-Matrix vor Ihnen hervorbringt, die das Hören von Lautsprechern ohne umständliche Einrichtung nachbildet VerfÜgt sowohl Über einen symmetrischen 4,4-mm-Pentacon- als auch einen unsymmetrischen 6,3-mm-Kopfhörerausgang (6,3 mm) auf der Vorderseite sowie drei Eingänge auf der RÜckseite, einschließlich eines 3,5-mm-Line-Outs, linker und rechter Cinch-Buchsen und einen symmetrischen 4,4-mm-Pentacon-Anschluss. Zusätzlich gibt es einen symmetrischen 4.4-Ausgang zum Anschluss an einen Leistungsverstärker oder Aktivlautsprecher zur Verwendung als Vorverstärker. Technische Daten Eingänge 4.4mm Pentacon BALCinch L/R Buchse SE3.5mm Klinke SE 4.0V nominal @ 0dBFS, 24 kOhm Zin2.0V nominal @ 0dBFS, 1 MegOhm Zin1.0V nominal @ 0dBFS, 1 MegOhm Zin Max Ausgang symmetrisch >15.1V/385 mW (@ 600 Ohm)>11.0V/1890 mW (@ 64 Ohm) S-E >7.6V/196 mW (@ 300 Ohm)>7.2V/1600 mW (@ 32 Ohm) Ausgangsimpedanz (HP) BALSE <2 Ohm<1 Ohm Z Out Line out <200 Ohm THD & N symmetrischS-E < 0.0007% (4V Ausgang, 600 Ohm, 1kHz)<0.006% (@ 100 mW/1.27V 16 Ohm) SNR symmetrischS-E >120dBA (@ 15.2V)>118dBA (@ 7.6V) Max. Eingang symmetrischCinch3.5mm 7.4V RMS3.8V RMS1.92V RMS Verstärkung 0dB, 6dB, 12dB und 18dB Frequenzgang 20Hz - 20kHz (+0dB / -0.03dB) Stromverbrauch Kein SignalMax Signal ~5W~13W Eingangsspannung DC 5V/2.4AAC 100 -240V50/60Hz Abmessungen 160(w) x 117(d) x 35(h) mm6.3 x 4.6 x 1.4 Nettogewicht 515 g (1.14 Ibs) Lieferumfang 1x iFi Audio - ZEN CAN - Kopfhörerverstärker 1x Cinchkabel 1x Klinkeadapter 1x Netzteil 1x Bedienungsanleitung Highlights fully balanced headphone amplifier discrete class A circuit fully symmetrical dual mono design XBass® and 3D Holographic® Product Description ifi Audio ZEN CAN – fully balanced headphone amplifier 1600 mW Laptops, tablets or smartphones have a low power output of only around 1V. With good headphones you lack the power here. You will never hear what your headphones can do. If you feed the analog result of the laptop, tablet or smartphone into the ZEN CAN, you can get 52 times the performance. You will now hear what you missed. The ZEN CAN has a discrete, symmetrical class-A amplifier circuit that comes from the expensive flagship iFi PRO iCAN. With 15.1 volts at 300 ohms, it has a power that makes even hard-to-drive headphones play. Extremely low distortion and noise from a circuit design inspired by ifi Audios flagship headphone amp that uses a dedicated input stage thats level matched to your source, allowing the signal to flow freely through the Class A output stage, literally music in yours ears. Maximize the power of your headphones to go beyond just getting loud, realizing the full dynamic range of the drivers and experiencing smooth vocals and heart-pounding drums without missing a beat. Delivers up to 1600mW of power into 16 ohms. Enhanced with signature analog signal processing to deliver more accurate and natural bass frequencies through XBass and present a wider soundstage bringing out the music in front of you through the 3D matrix that replicates listening to speakers without the hassle of setup Features both a balanced 4.4mm Pentacon and an unbalanced 6.3mm (1/4) front panel headphone output and three rear panel inputs including a 3.5mm line Outs, left and right RCA jacks and a balanced 4.4mm Pentacon connector. In addition, there is a balanced 4.4 output for connection to a power amplifier or active loudspeaker for use as a preamp. Technical Data Inputs 4.4mm Pentacon BALRCA L/R Socket SE3.5mm Jack SE 4.0V nominal @ 0dBFS, 24 kOhm Zin2.0V nominal @ 0dBFS, 1 MegOhm Zin1.0V nominal @ 0dBFS, 1 MegOhm Zin Max Output Balanced >15.1V/385 mW (@ 600 Ohms)>11.0V/1890 mW (@ 64 Ohms) S-E >7.6V/196 mW (@ 300 Ohms)>7.2V/1600 mW (@ 32 Ohms) Output Impedance (HP) BALSE <2 Ohms<1 Ohm Z Out Line out <200 Ohms THD & N BalancedS-E < 0.0007% (4V out, 600 Ohms, 1kHz)<0.006% (@ 100 mW/1.27V 16 Ohm) SNR BalancedS-E >120dBA (@ 15.2V)>118dBA (@ 7.6V) Max. Input BalancedRCA3.5mm 7.4V RMS3.8V RMS1.92V RMS Gain 0dB, 6dB, 12dB and 18dB Frequency Response 20Hz - 20kHz (+0dB / -0.03dB) Power consumption No SignalMax Signal ~5W~13W Input voltage DC 5V/2.4AAC 100 -240V50/60Hz Dimensions 160(w) x 117(d) x 35(h) mm6.3 x 4.6 x 1.4 Net weight 515 g (1.14 Ibs) Scope of Delivery 1x iFi Audio - ZEN CAN - headphone amplifier 1x RCA cable 1x jack adapter 1x power supply 1x user manual » Retourenware / Vorführartikel Es handelt sich um einen durch Fachpersonal geprüften Retourenartikel, bei dem lediglich kleine Schönheitsfehler bei der Verpackung oder dem Produkt festgestellt werden konnten. Alle Artikel sind voll funktionstüchtig und technisch absolut neuwertig. Die Artikel werden von uns in Originalverpackung versendet. Hierunter fallen ebenfalls Artikel, welche von uns kurz ausgepackt und Kunden in unseren Wohnraumstudios vorgeführt worden sind. Danach werden die Artikel selbstverständlich von uns von Hand wieder ordentlich verpackt und versiegelt. Auf alle Artikel mit dieser Kennzeichnung haben Sie ebenfalls zwei Jahre Gewährleistung. Einfach & Bequem Bezahlen Vorkasse per Überweisung Nachnahme Bezahlung bei Abholung Schnelle Lieferung & Versand Kostenloser Versand (DE) Selbstabholung Premium Auction Tools - Cross-Selling loading... Cross-Selling powered by Premium Auction Tools 2023-06-02 15:01 - 204356284602 Kolumbus24 > ebay-Shop > Bewertungen anzeigen Kontakt aufnehmen Shop-Newsletter Auf Wunsch informieren wir Sie gerne über neue Angebote & Trends. Jetzt anmelden Anschrift Kolumbus GmbH Georg Wellemeyer Karl-Rothe-Straße 4 04105 Leipzig © Kolumbus24.com 2017 - Alle Rechte vorbehalten

Vintage Zenith Replacement Part 9-48-R AGC AMP Module is in New Condition! Item comes in Original Box! Please look at the photos as they show you the condition of the item. If you have any questions or need additional photos do not hesitate to ask.Thank You and Have a Great Day!!

ifi Audio ZEN Phono Preamp.

iFi Audio ZEN DAC V2 Desktop USB DAC and Headphone Amplifier. Brand new.

iFi Zen DAC V2 | Desktop Digital Analog Converter with USB 3.0 B Input only/Outputs: 6.3mm Unbalanced / 4.4mm Balanced/RCA - MQA DECODER - Audio System Upgrade. It includes iFi SilentPower iPower2 - Low Noise DC Power Supply (5V/2.5A) ($69 in extra value). The ZEN DAC V2 can be power with the same data cable from the computer, but the iPower2 provides extra, cleaner power. I can also include a longer USB 3.0 A to B than the one in the box if needed. This DAC sounds great, I just when down the rabbit whole of Hi-fi audio and upgraded to a more expensive stack before even using this one.

* * * * * * * * * *   ONE ZENITH 34GD5 NOS NIB Vacuum Tube* * * * * * * * ******************************************************** Listing and template services provided by inkFrog

Nice Closely Matched Pair of Strong Zenith Sylvania 6V6G Audio Amp Vacuum Tubes.

Nice Closely Matched Pair of Strong Zenith Sylvania 6V6G Audio Amp Vacuum Tubes.

Verkaufe meinen Ifi ZEN Can Kopfhörerverstärker mit sehr wenigen Betriebsstunden ( <10 Stunden ) Keine Gebrauchsspuren inkl. allem Zubehör und OVP! Rechnung aus Januar 2022 gibt es auch dazu,somit noch Restgarantie vorhanden! Da Privatverkauf - keine Garantie oder Rücknahme, keine Gewährleistung.

Ask the Seller Shop Our Store Free Tech Support Free Shipping eBay Seller Since 2002 Quality, Reponsive Customer Service IFI 311003 RCA Output ZEN Phono Preamplifier for Turntables & Record Players List / MSRP: $233.58 PRODUCT CONDITION ITEM APPERANCE FUNCTIONALITY Item has been opened and is in the original retail packaging. Learn More Item shows virtually no signs of wear. Learn More Item has been professionally tested and inspected to ensure complete functionality. Learn More ITEM DETAILS Features iFi ZEN Phono - Preamplifier for Turntables and Record Players (RCA Output) Specifications: INPUTS - Selectable MM and MC cartridge input OUTPUTS - RCA and Balanced 4.4mm Pentacon Outputs CUSTOMIZE TO YOUR TURNTABLE SETUP - Ultrawide 36dB to 72dB gain INTELLIGENT - subsonic analog filter ACCESSORIES - Includes 5V DC power supply and RCA cable Technical Details:Brand: IFIProduct Dimensions: 6.3 x 4.4 x 1.4 inchesItem Weight: 5.6 ouncesManufacturer: Abbingdon LtdItem model number: 311003 iFi Audio Zen Phono Preamp for Turntables / Record Players STORE POLICIES Shipping: All orders ship on the next business day. TradePort uses the most cost and time-efficient method for each item shipped on an individual basis. Expedited shipping available in certain instances – please contact the seller for more info. Returns: All TradePort purchases are covered by a thirty-day return policy. Free returns are available in cases where a product is not as described – all other returns require the buyer to purchase their own return label. TradePort charges a refund deduction fee for any item that is returned in a condition different from how it was sold. Warranty: TradePort does NOT advertise or make any guarantees regarding manufacturer warranty status. Warranty terms and conditions may vary by product or manufacturer. Warranty work will be performed solely at the manufacturers discretion. For additional warranty coverage beyond TradePorts 30-day limited warranty and/or manufacturer warranty, SquareTrade offers 2-5 year Service Plan coverage for NEW electronics and 1-2 year Service Plan coverage for REFURBISHED and USED electronics. POPULAR CATEGORIES Cameras & Photo Cell Phones Computers & Tablets Home & Garden Sporting Goods Home Audio

iFi Audio ZEN DAC V2 Compact DAC and Hi-Res Headphone Amplifier. Fully working in great condition. Comes from a pet and smoke free home.

iFi ZEN Air DAC Hi-Res DAC/Headphone Amplifier with 32-Bit/384kHz, DSD256, MQA capabilities. Unit and USB cable only, no box or instruction leaflet. Superb condition - looks unused. RRP £99. “Flexible formats The ZEN Air DAC supports different file formats – PCM 32bit/384kHz, fully native DSD256 and MQA. PCM – Pulse Code Modulation is the file format used in CD, DVD, Blu-ray and other digital audio applications. It’s the next step up from MP3. DSD – Direct Stream Digital is a very high-quality audio format, better than CD quality. The higher the number (sample rate), the better the recording – DSD64, 128, 256, 512 and 1024. Fully native means that it hasn’t been altered in any way from the original recording. MQA – Master Quality Authenticated is an award-winning audio technology that enables music fans to stream the original master recording into their home, car or their mobile. With the ZEN Air DAC you can listen to MQA straight out of the box. Simply connect to Tidal Masters and check the option to stream MQA. Find out more about MQA here. Sonic tailoring The ZEN Air DAC also sports a couple of unique sonic tweaks from iFi. PowerMatch adjusts the gain of the ZEN DAC Air so it functions at the right level for your headphones. Gain is just a unit of measurement that indicates how loud an audio source is and is measured in decibels (dB). XBass+ allows you to tailor the bass to suit your headphones and your personal taste. Both are designed to improve and personalise your listening experience. And breathe… Most DACs still use digital volume control – ours is analogue. What does this mean? When you reduce the volume on other DACs you remove data from the song or soundtrack. With analogue volume control, you reduce the volume whilst maintaining the quality. Put simply, the ZEN Air DAC is an easy way to experience super clear, hi-res audio quality in your everyday listening. Sift through the noise, breathe in the Air. The Burr-Brown True Native® chipset means file formats remain unchanged or ‘bit-perfect’. This means you are listening to music as the artist intended in the format in which it was recorded. At iFi we use Burr Brown extensively in our products having selected it for its natural-sounding ‘musicality’ and True Native architecture. Our experience with this IC means we know how to make the most of it. The XMOS 16-Core chip processes the audio data received via the USB digital input. This new low-latency XMOS microcontroller has greatly enhanced processing power. Compared to the current generation of eight-core chips, this new 16-core IC delivers double the clock speed (2000MIPS) and four times the memory (512KB), as well as the latest SuperSpeed USB standard. iFi’s in-house digital development team has programmed the XMOS firmware to optimise sound quality and ensure a perfect partnership with the Burr-Brown DAC. Listen to Master Quality Authenticated audio straight out of the box. Connect to Tidal Masters and check the option to stream MQA. MQA is an award-winning audio technology that enables music fans to stream the original master recording into their home, car or on their mobile. In the words of Gilbert O’Sullivan, iconic Irish-born singer-songwriter, “The great thing about MQA is that it delivers the finesse that was there in the desk sound. It’s tremendous, it sounds really good.” Our video tutorials on You Tube show you how. OV Series operational-amplifier As with many other iFi audio products, we’ve incorporated a custom OV Series operational-amplifier. This top-notch component contributes to the extremely low noise, low distortion (0.0001%) and wide bandwidth. TDK C0G (Class 1 ceramic) capacitors TDK C0G (Class 1 ceramic) capacitors offer high stability and low losses for resonant circuit applications. Getting ever closer to the theoretical ideal of pure, frequency-constant capacitance, these capacitors reduce capacitor-induced distortion to vanishingly low levels. They are pricey but are a perfect addition to our products. Texas Instruments low-noise ICs Texas Instruments low-noise ICs offer great unity-gain bandwidth, very low noise and distortion, high output drive capability, Common-mode and Power Supply Rejection Ratios of over 100 dB, wide maximum-output-swing bandwidths and high slew rates.”

IFI Zen DAC V1 USB Digital to Analogue Convertor and Headphone Amplifier. Excellent condition. Used. No box. All accessories included.

iFi ZEN CAN 2 Channel Desktop Headphone Amp & Preamp - IF1640. I have owned this from brand new and bought it directly from Amazon last year. Amazing little amp for the money. Everything is as new and includes all the original packing etc. I’m also selling my Topping d90d on a separate listing so see that if you are interested. Questions welcome.

For sale my Ifi Audio Zen Can balanced headphone amp/pre amp, new, mint condition, with all accessories, boxed,I purchased this new but only used once, decided I’m not keen on headphones, prefer to listen through loudspeakers.Generic 5V Power Supply IncludedClass A discrete output buffer from the flagship Pro iCAN using Op-Amp (OV2637A)FET input avoids loading volume control – low distortion/noiseSE inputs (1M Ohm) ensures loading of the source so always in Class A operationOutput amplifier gain of four steps in +6dB perfect for headphone matchingThe XBass® analogue bass correction system corrects for the missing headphone/speaker bass response.An ‘Out of Head’ listening experience. iFis 3D Holographic® dual-analogue matrices place the artist with you in the room, not inside your head.

Used like new Zen Phono Stage - Includes 5V DC power supply and RCA cable LP + ZEN = Magical Combo MM / MC compatible INPUTS - Selectable MM and MC cartridge input OUTPUTS - RCA and Balanced 4.4mm Pentacon Outputs CUSTOMIZE TO YOUR TURNTABLE SETUP - Ultrawide 36dB to 72dB gain INTELLIGENT - subsonic analog filter

PRODUCT DETAILSAWARD-WINNER MADE BETTERWinner of multiple awards, including the prestigious What Hi-Fi 2020, ‘Best DAC £100 - £200’, the iFi Audio ZEN DAC was hard to beat. Until now. The ZEN DAC V2 upgrades the processing chip from 8-core to 16-core XMOS. This means that MQA files are now fully supported – perfect when using the top-end TIDAL streaming service.SUPERCHARGE YOUR COMPUTER’S SOUNDWhether you have a PC or Mac, laptop, tablet or Chromebook, listening to music while you surf, work or game is a constant pleasure. What’s less good is the sound quality – even if you’re using a pair of good quality headphones, the sound output is usually left wanting. The ZEN DAC (Digital to Analogue Convertor) V2 massively improves the sound by bypassing your computer’s soundcard and headphone output and replacing them with bespoke, audiophile grade components.DACS THE WAY TO DO ITUsing a bit-perfect, Burr Brown DAC, the ZEN DAC V2 not only decodes a wide range of formats but sounds as true to the original sound as possible. Hi-Res music files are supported up to DSD256 and PCM files up to 384kHz.HI-FI QUALITY ELECTRONICS INSIDEMaking the most of the top quality DAC, the other internal electronics offer the highest quality sound – just as you’d find in quality hi-fi. The balanced circuit layout uses top quality audio components, such as TDK (Class 1 ceramic) capacitors for high precision, low distortion sound quality.MAXIMISES YOUR HEADPHONES’ POTENTIALWith its dedicated output, the Zen DAC V2 provides your headphones with a dynamic, punchy sound. You can choose between balanced and unbalanced outputs, giving the chance for higher spec headphones with balanced inputs to really shine.OUTPUT THE SOUND TO YOUR HI-FI OR SPEAKERIt’s not just headphones that benefit from this compact powerhouse DAC. Featuring RCA phono outputs, you can connect up to the AUX input on your hi-fi or speaker system, too. If your hi-fi has a balanced input, why not take advantage of the second, 4.4mm balanced output at the rear of the unit. Either way, simply switch the output to ‘fixed’ and you’re good to go with an instant system upgrade.BOOST THE BASSFor times when you need a deeper, richer sound, simply switch on TrueBass. Unlike inferior bass boost systems, this works entirely in the analogue domain and doesn’t rely on a DSP (Digital Signal Processor). The result is deeper bass, without a compromised and muddy-sounding midrange.Optimise your audio performance, with the iFi Audio ZEN DAC V2.SPECIFICATIONAudio Outputs Yes - (1 x RCA)Headphone Output Yes - 6.35/4.4mmLoudness Control TrueBassDAC Burr BrownDimensions WxHxD (mm) 160 x 117 x 35Weight (KG) 0.8WHATS INCLUDEDiFi Audio Zen Dac V2Upgraded USB cable (cost me £40)

iFi Zen DAC V2 Desktop DAC Amp w bass boost, OG packaging & cables included. Less than a year old, I bought it brand new from Amazon. Comes with all original packaging & usb cable

iFi Zen DAC/CAN Desktop Amp and DAC Stack. iFi Zen DAC - HiFi Desktop Digital Analog Converter with USB3.0 B Input/Outputs: 6.3mm Unbalanced / 4.4mm Balanced/RCA. iFi ZEN CAN Balanced Desktop Headphone Amp and Preamp with 4.4mm Outputs [US Pin]. Excellent starter combo. MQA. Excellent condition. Shipping within the US only. Thanks

iFi Audio Zen Phono Stage Preamp for Turntables Record Players.

iFi Zen DAC V2 | Desktop Digital Analog Converter | USB DAC/AMP

IFI Zen DAC V1 USB Digital to Analogue Convertor and Headphone Amplifier- Black. Great condition barely used, no box sadly! Willing to do a package deal with the hd600 headphones!

iFi Zen CAN Signature 6XX - Balanced Desktop Headphone Amp and Preamp with 4.4mm Outputs Open Box Get performance out of your audio setup with the ZEN CAN Signature. High-fidelity or high quality headphones, most audio sources, like your smartphone, computer, tablet or digital audio player, don’t provide enough power to move the drivers of your headphones to produce the sounds they’re capable of making. The Zen CAN Signature delivers up to 1890mW of power with four adjustable gain settings to perfectly match gear. It has a Class A discrete circuit, a fully symmetric dual-mono amplifier design and boasts a astoundingly low noise floor of 122dB Its internal components, from the high quality ECPU and TDK C0G capacitors to the OV2637A J-FET op amp, are carefully selected and engineered for the highest quality possible and low distortion. Use the standard 6.3mm output for single ended TRS connections or take full advantage of our balanced topology with the 4.4mm pentaconn TRRS output. Connect up to three different analog sources with a 3.5mm single ended line input, a RCA left and right channel, and a balanced 4.4 input. You can also use it as a preamp with precision analog volume control by connecting a power amplifier or active studio monitors to the 4.4mm balanced line out. Customize your experience even further with these selectable analog features: xSpace - corrects bass frequencies for a more natural sound, and HD6XX - a switchable EQ circuit specifically designed to get the most out of the HD 6XX. Called ActivEQ, this circuit calibrates the amp’s signal to complement the HD 6XX’s frequency response characteristics, thus tailoring its performance to precisely fit the headphones like a made-to-measure suit. The Precision analog sound control allows for a more precise volume selection than digital volume controls. Military Grade Aluminum makes up a sturdy and sleek exterior, while the smooth curves and edges will bring a sense of peace and tranquility to your home or office. Included is the iFi iPower2 5V adaptor, which provides clean, low noise power Thanks for Looking!