VOLUME CONTROL AND LINE AMPLIFIER TECHNOLOGY The Aethos uses a high performance combined feedback and passive volume control plus line amplifier, which was originally developed for the Elex-R.  Improvements have been made to the volume control and line amplifier stages in the Aethos with the use of discrete FET input operational amplifiers using the Linear Systems LSK389 FET and the well-respected RK27 ‘Blue Velvet’ potentiometer. The feedback and input levels are varied to set the required volume level. The level and tracking between the two channels is set by the close tolerance parts in the pre-amplifier circuit and less by the actual potentiometer itself, thus keeping the mismatch of channels due to volume control tracking irregularities to a minimum, further improving on the performance of the RK27 potentiometer. As well as keeping tracking irregularities to a minimum, this method also reduces noise and input overload as the control will only ‘use’ the required gain to amplify the signal. This form of volume control is normally only found in professional broadcast environments where accurate low noise control of levels is required. POWER AMPLIFIER TECHNOLOGY The power amplifier used in the Aethos is an improved higher power version of the power amplifier used in the Elicit-R and Elex-R. The output amplifier used in the Aethos, was born after extensive research by our engineers to develop a low source impedance emitter follower Class-A driver stage. This is based around two complementary pairs of 160w Sanken Darlington output transistors. The technical and sonic improvement gained by the use of low impedance drivers is well known, however, it can feature high standing currents in the driver stage when using standard transistor configurations. By combining the low impedance driver with the Sanken Darlington transistors (with their imbedded thermal bias network running at a lower standing current), this combination forms a complementary emitter follower emulating Class-A conditions with good thermal stability and lower standing currents in the driver stage. Due to the nature of the Rega power amplifier circuit we are able to run two complete output stages in parallel, this includes the output transistors, bias network and pre diver transistor this is instead of paralleling just the output transistors as normally found. This ensures the 125 watt output is achieved with complete ease.   SPECIFICATIONS Power outputs at rated 230/115 V supply voltage: 125 W RMS both channels driven into the rated load of 8 Ω 156 W RMS both channels driven into 6 Ω   Headphone output: No load 12.5 V 32 Ω 2.7 V 54 Ω 4 V 300 Ω 9 V Source impedance 109 Ω Record output: Record output level (with rated input levels) 219 mV Record output impedance 560 Ω Pre-amp output: Pre-amp output level (with rated input levels) 840 mV Pre-amp output impedance 100 Ω Input sensitivities for rated output level: Input 1-5 and record input sensitivity 224 mV @ 17 kΩ Maximum input level 11.5 V (record output amplifier overload point) Direct input sensitivity 840 mV @ 50 kΩ Power amplifier gain 31.6 dB Frequency response @ 100 W into 8 Ω: Line input 1-5 and record 10 Hz (-0.8 dB point) to 30 kHz (-0.5 dB point) Direct input 10 Hz (-0.8 dB point) to 50 kHz (-0.5 dB point) THD+Noise @ 100 W into 8 Ω: Direct input (Power amplifier only) Typically 0.007% @ 1kHz (measurement bandwidth 22 Hz to 30 kHz) Line input Typically 0.007% @ 1kHz (measurement bandwidth 22Hz to 30KHz) Power consumption Maximum output: 415 W @ 230 V / 220 V / 115 V / 100 V into the rated load of 124 W RMS into 8 Ω Fuse ratings T5 AL 250 V - 230 V/ 50 Hz and 220 V / 60 Hz T8 AL 250 V - 115 V / 60 Hz and 100 V 50/60 Hz Dimensions W 433 mm x H 95 mm x D 360 mm (including speaker terminals) Weight 17.5 kg read more

The io uses the same power amplifier and phono stage as its larger brother, the multi-award winning Brio. The io aims to deliver exceptional sound quality in a smaller and more cost effective package. The class A/B circuit shares its DNA with the rest of Rega’s amplifiers, and as usual, great care has been taken in component selection. Sanken output transistors and an Alps volume potentiometer and a linear power supply that enables an output of 30 watts per channel into 8 ohms. Two line level inputs and a high quality moving magnet phono input are available as sources. There is a headphone output provided on the front of the unit for powering standard hi-fi headphones; this is driven from the power amplifier stage of the unit through relays to avoid signal degradation when headphones are inserted or the product is muted. A new remote handset is included as well. Power outputs at 230/115 V supply voltage 30 W RMS both channels driven into the rated load of 8 Ω Input 1 (Phono) input sensitivity 2.1 mV @ 47 kΩ in parallel with 220 pF Maximum input 1 (Phono) input level 100 mV Input 2-3 (Line) input sensitivity 210 mV @ 47 kΩ Maximum input 2-3 (Line) input level 10.25 V Headphone output No load 8 V 32 Ω 1.6 V 54 Ω 2.4 V 300 Ω 5.7 V Source impedance: 109 Ω Power consumption 135 W @ 230 V / 220 V / 115 V / 100 V into the rated load of 8 Ω Frequency response Phono: 15 Hz to 40 kHz (-3 dB points) / 27 Hz to 20.5 kHz (-1 dB points) RIAA accuracy: (100Hz to 10 kHz) ±0.4 dB typically better than ±0.3 dB Line: 12 Hz (-1 dB points) to 43 kHz (-3 dB points) Remote control Batteries included –2 x AAA Alkaline. Fuse ratings T1.6 AL 250 V: 230 V / 50Hz and 220 V / 60 Hz T3.15 AL 250 V: 115 V / 60 Hz and 100 V / 50/60 Hz Weight 2.9Kg Dimensions (W x D x H) in mm 180 x 290 x 68   read more

QR 3   QR 3 THE NEW FLOORSTANDER The design goal of the QR series has been to offer today’s most advanced technology in a perfectly finished compact package. The sound is big and bold, pleasant and detailed – excellent for all types of music. THE GOLD LEAF AIR MOTION TWEETER The fascia plate is machined from a single piece of Aerospace Grade Aluminum. It has been precision machined, glass blasted, brushed and then anodized in a beautiful Tungsten Titanium Grey color. It features a rose gold plated dispersion mesh, which works as an S-Stop filter.   PURE PISTON DUAL MAGNET BASS DRIVER This new Audiovector drive unit has the ability to work like a perfect piston over several octaves of the frequency band without the distortion normally found in aluminum/diamond drive units. This means music sounds warm, precise and detailed, yet dynamic and musical. FREQUENCY RANGE -6DB 30-45 kHz SENSITIVITY (8 OHM) 90 dB NOMINAL IMPEDANCE 4-8 Ω POWER HANDLING 200 W X-OVER FREQUENCIES 400 Hz / 3 kHz TREBLE DRIVER Gold Leaf AMT with S-stop filter HEIGHT / WIDTH / DEPTH ( CM ) 94,2 x 19 x 23,2 read more

QR 1 QR 1 THE NEW BOOKSHELF MODEL The design goal of the QR series has been to offer today’s most advanced technology in a perfectly finished compact package. The sound is big and bold, pleasant and detailed – excellent for all types of music. THE GOLD LEAF AIR MOTION TWEETER The fascia plate is machined from a single piece of Aerospace Grade Aluminum. It has been precision machined, glass blasted, brushed and then anodized in a beautiful Tungsten Titanium Grey color. It features a rose gold plated dispersion mesh, which works as an S-Stop filter.   PURE PISTON DUAL MAGNET BASS DRIVER This new Audiovector drive unit has the ability to work like a perfect piston over several octaves of the frequency band without the distortion normally found in aluminum/diamond drive units. This means music sounds warm, precise and detailed, yet dynamic and musical. FREQUENCY RANGE -6DB 45-45 kHz SENSITIVITY (8 OHM) 87 dB NOMINAL IMPEDANCE 4-8 Ω POWER HANDLING 150 W X-OVER FREQUENCIES 3 kHz TREBLE DRIVER Gold Leaf AMT with S-stop filter HEIGHT / WIDTH / DEPTH ( CM ) 32,5 x 19 x 23,2 read more

The M30.1 Loudspeaker Reference quality, domestic size A refinement of the BBC LS5/9 speaker. The multi award-winning M30.1 loudspeaker brings a smooth, well-rounded and clear sound to the home audio system, all in a convenient cabinet size. The smallest Harbeth to be engineered around the exclusive 200mm Harbeth RADIAL2™ bass/mid unit  — derived from the reference M40.2 — the M30.1 space-saver disappears into the listening room. The outstanding midrange clarity and controlled bass bring music to life in a wide range of domestic listening environments and makes for a perfect front-centre-rear-channel surround sound system.  Specifications:- Transducer System: 200mm Harbeth RADIAL™ bass/midrange; 25mm ferr-cooled soft dome tweeter Frequency response: 50Hz - 20kHz +/-3dB, free-space, grille on, smooth off-axis response Impedance: 6 ohms, easy to drive Sensitivity: 85dB/1W/1m Amplifier Suggestion: Works with a wide range of amplifiers - suggested from 25W Power handling: 150W programme Connectors: Two 4mm gold-plated binding posts Dimension: 460 x 277 x 275mm (+12mm for grille and binding posts) Finish: Cherry Space Needs: Overall response optimised for use away from walls. Stands: Optimally to bring ears level with tweeters. (Tweeter: 320mm up from cabinet base) Weight: 11.6kg each without packing Packing: Single speaker per protective carton read more

The C7ES-3 Loudspeaker The icon of clarity and detail Essential neutrality and natural tonal balanceWhatever you ask of the Compact 7ES-3 loudspeaker, it always delivers: perfectly. The clarity is spellbinding and brings the magic carpet ride experience to the listening room in a medium-sized enclosure. The legendary multi-award winning medium-sized Harbeth HL Compact 7ES-3 takes the ultra-clean Harbeth cone technology to another performance level, combining natural sound with a flair for reproducing any and every type of music. The Harbeth secret for natural sound is the result of the meticulous attention to detail. Critically important, but hidden, is the crossover, which carefully integrates the drive units across a wider horizontal and vertical arc. Consequently,  the Compact 7ES-3 is far less critical of stand height than many speakers of this size.  Specifications:- Transducer system:  2 way vented, 200mm Harbeth RADIAL2™ bass/mid; 25mm ferro-cooled tweeter Frequency response: 45Hz - 20kHz ±3dB free-space, grille on, smooth off-axis response Impedance: 6 ohms, easy to drive Sensitivity: 86dB/1W/1m Amplifier Suggestion: Works with a wide range of amplifiers, suggested from 25W/channel Power handling:  150W programme Connectors: Two 4mm gold-plated binding posts for wires or plugs Dimensions: 520 x 272 x 305mm (+12mm for grille and binding posts) Finish: Cherry Space Needs: Overall response optimised for use away from walls. Stands: Optimally to bring ears level with tweeters. (Tweeter: 440mm up from cabinet base) Weight: 13.2kg each, excl. packing Packing: Single speaker per protective carton   read more

The Super HL5plus loudspeaker The ultimate British domestic monitor The definitive Harbeth speaker This model is the latest and greatest iteration of the legendary Harbeth HL-Monitor Mk1 from 1977 that launched the Harbeth company. In continuous production through several design generations since its inception, now featuring Harbeth's RADIAL2™ driver and a radically new approach to the crossover. The HL5plus gets the very best from the Harbeth-made 200mm RADIAL2™ bass/mid driver in a cabinet is skillfully designed according to the pioneering research undertaken by the BBC. The system sound is large, powerful and transparent with an astonishing freshness. No wonder the SHL5 family is such a worldwide legend. The SuperTweeter extends the system response to the upper edge of the audio band and beyond. Harbeth's Super HL5plus loudspeaker produces a huge soundstage of width, depth and weight for a total immersion in the musical performance. Specifications:- Transducer System: 3-way vented: 200mm Harbeth RADIAL2™ bass/mid; 25mm ferro-cooled dome tweeter,                                           20mm dome SuperTweeter Frequency Response: 40Hz - 20kHz ±3dB free-space, grille on, smooth off-axis response Impedance: 6 ohms, easy to drive Sensitivity: 86dB/1W/1m Amplifier Suggestion: Works with a wide range of amplifiers, suggested from 25W/channel. Power Handling: 150W programme Connectors: Four 4mm gold-plated binding posts for wires or plugs (biwireable) Dimensions: 635 x 322 x 300mm (+12mm for grille and binding posts) Finish: Cherry Space Needs: Overall response optimised for use away from walls. Stands: Optimally to bring ears level with tweeters: typically 16-20 inches. (Tweeter: 475mm up from cabinet base) Weight: 15.8kg each, unpacked Packing: Single speaker per protective carton read more

The P3ESR Loudspeaker. Amazing space-saving sound Harbeth's world-exclusive RADIAL2™ technology from the larger Harbeth models has been transferred to the heart of the P3ESR loudspeaker. Designed and made by Harbeth UK, the special 110mm (5'') bass/midrange driver offers the hallmark clarity and naturalness of the larger Harbeths. Breathtaking transparency, real bass, and fantastic holographic imaging give the P3ESR grand, captivating, transparent sound. In a conveniently small and beautiful cabinet. Not only is the P3ESR loudspeaker capable of being used in a wide range of listening environments, but it is optimised to present an easy electrical load to even low-powered amplifiers. Specifications:- Transducer system: 110mm Harbeth RADIAL2™ bass/midrange; 19mm ferro-cooled tweeter Frequency Response: 75Hz - 20kHz ±-3dB free-space, grille on, smooth off-axis response Impedance: 6 ohms, easy to drive. Sensitivity:  83.5dB/1W/1m Amplifier suggestion: Works with a wide range of amplifiers, suggested from 15W/channel. Power handling : 50W programme Connectors: Two 4mm gold-plated binding posts for wires or plugs Dimensions: 306 x 190 x 184 mm (+12mm for grille and binding posts) Finish: Cherry, Rosewood Space Needs: Ideally > 0.30m from rear wall Stands: Optimally to bring ears level with tweeters. (Tweeter: 230mm up from cabinet base) Weight:  6.1kg each (without packing) Packing: One matched pair per protective carton     read more

The P3ESR Loudspeaker. Amazing space-saving sound Harbeth's world-exclusive RADIAL2™ technology from the larger Harbeth models has been transferred to the heart of the P3ESR loudspeaker. Designed and made by Harbeth UK, the special 110mm (5'') bass/midrange driver offers the hallmark clarity and naturalness of the larger Harbeths. Breathtaking transparency, real bass, and fantastic holographic imaging give the P3ESR grand, captivating, transparent sound. In a conveniently small and beautiful cabinet. Not only is the P3ESR loudspeaker capable of being used in a wide range of listening environments, but it is optimised to present an easy electrical load to even low-powered amplifiers. read more