Note that this is a discontinued product. You may want to visit the brand's page here to browse their newer products.
What reviewers think
Magazine reviewers and YouTubers have tried this product—so we've summarized their strongest opinions below.
Product Strengths
- Superior sound quality, more dynamic, throws a solid and expansive soundstage, and presents the music against a quieter background
- Honest and neutral sound signature, minimizing tube editorializing and offering greater musical immersion
- User-friendly and customizable touchscreen display for complete control
- Reveals musical detail and bass texture, improving upon earlier Reference preamps
- Opens up a musical world that remains out of reach for most
Product Considerations
- Significant shelf space is required due to its two-chassis design
- Careful system matching is needed, as it will reveal weaknesses in other components
- Stylistically, it is in something of an odd place, straddling the product design of Audio Research preamps of old, without the aesthetic of the latest Foundation and Reference line, and being something of an outlier
- Some time may be required to adjust to the level of detail and information it presents
Comparisons (according to reviewers)
- The Reference 10 offers improved dynamics, bass resolution, and suddenness compared to the Audio Research Reference 5 SE
- The Reference 10 sounds lighter, faster, and more resolute, especially in the bass region, compared to the Audio Research Reference Anniversary, which has a denser, sweeter character
- The Ayre KX-R Twenty sounds surprisingly like—the Audio Research Reference 10
Takeaway: The Audio Research Reference 10 is a thrilling and engrossing preamplifier that delivers exceptional sound quality and user customization, making it a valuable addition to a high-end audio system. Its ability to reveal detail and create an expansive soundstage ensures a captivating listening experience.
Compared to their other products
We think it's helpful to understand how this product fits into the brand's full lineup (below). To learn more about these products, visit the brand's page.
I/50 Integrated Amplifier
- Positioning: The entry-level integrated amplifier in the Audio Research lineup.
- Description: Offers a compact design with a powerful all-tube amplification circuit, making it ideal for small to medium-sized rooms. Features optional DAC and phono modules, providing flexibility for various audio sources, unlike the more specialized power amplifiers in the lineup.
VT80 SE Stereo Amplifier
- Positioning: A mid-range stereo amplifier, offering a balance between performance and affordability.
- Description: Uses KT150 tubes for a robust output, suitable for diverse speaker setups. Provides a fully balanced design, unlike the I/50, and is more powerful.
Reference 160S Stereo Power Amplifier
- Positioning: A premium stereo amplifier, designed for serious audiophiles.
- Description: With its dual GhostMeters and advanced auto-bias technology, provides superior soundstage and detail. Offers more power and flexibility than the 80S.
Reference 330M Monoblock Power Amplifier
- Positioning: The flagship monoblock amplifier, representing the pinnacle of Audio Research's engineering.
- Description: Combines groundbreaking technology with an all-tube signal path, offering unmatched control and dynamic range. Surpasses the 160M MKII in power and sophistication, making it the ultimate choice for those with no budget constraints and a desire for the best possible sound.
Read the reviews

Manufacturer's notes
- Frequency Response: +0 -3dB 0.1Hz to 200kHz at rated output (BALANCED, 200k ohms load)
- Distortion: Less than .006% at 2V RMS Balanced output
- Gain: Main output 12dB Balanced output, 6dB Single Ended output
- Input Impedance: 120K ohms Balanced, 60K ohms SE
- Output Impedance: 600 ohms Balanced, 300 ohms SE main
- Maximum Input: 20V RMS maximum Balanced (10V RMS SE)
- Rated Outputs: 2V RMS (1V RMS SE)
- Crosstalk: -80dB or better at 1kHz
- Noise: 1.7uV RMS residual IHF weighted
- Tube Complement: (8)-6H30P dual triodes, plus (2 each) 6550C and 6H30P in power supply
- Power Requirements: 100-135VAC 60Hz (200-270VAC 50/60Hz) 235 watts maximum
- Standby Power: 0.8 watts
- Dimensions: Width 19" (48 cm), Height 7" (17.8 cm)
Our take on the brand
Used
Audio Research
What if you spend a bit more?

Our Summary
Product Strengths
- A phonostage without compromise in every parameter of sound reproduction
- Easy access via three large front knobs for IMPEDANCE, CAPACITANCE, and GAIN
- Each phono input has its own discrete gain section, as it is a triple dual mono design
- The front panel has a large volume control and a display friendly to read from across the room
- Three pairs of RCA inputs in the back and one pair of RCA and XLR outputs
Product Considerations
- The Pass Labs XS Phono comes in two large chassis
- Pass Labs products are not known for being space saving
- The lack of balanced inputs or an EQ button for early Decca and Columbia pressings might be annoying
- Blue LEDs are built into each change segment of the three large knobs as well as above the push-buttons, though the minimal brightness suggests close proximity operation is expected
Takeaway: The Pass XS Phono exceeds what the reviewer has heard regarding analog playback, with incredible versatility that makes music sound effortless and is worth the investment. If you have multiple turntables, it has musicality at your disposal.
Video review
Our take on the brand

Our Summary
Product Strengths
- Highly optimized to provide a pure musical outcome in the absence of mechanical sonic traits
- Full tube, pure class A, zero feedback circuit design
- Fully balanced operation achieved with ultra-high-quality transformers on both inputs and outputs with mu-metal core and mu-metal shielding
- Massive, machined aluminum enclosure was designed from the very beginning to deal with unwanted micro-vibrations and resonances
Product Considerations
- May require careful system matching due to its harmonically rich inner kernel
Comparisons (according to reviewers)
- Vs Robert Koda Takumi K-10 preamplifier: Both similarly addressed inner clockings
Takeaway: The Riviera Audio Labs APL-01SE is a remarkable preamplifier with a unique approach to music reproduction and a design focused on sonic purity. Its vibrant sound and exceptional build quality make it a standout choice in the hifi market.
Video review
Our take on the brand

Our Summary
Product Strengths
- Utterly posh and elegant behavior with a romantic sound profile built upon a somewhat elevated tonal temperature, round edges, remarkable smoothness, sensible heft, and spatial humidity
- Equally gifted on romance and tone as it was on crack, snap, and vigor, making it fabulously balanced
- Staged even deeper than the Trilogy 915R, and enveloped key sound sources by more air to make them even more distinctive
- Weightier upper registers that lingered in air for longer, and heftier bass that dug deeper was still held in as tight of a grasp
- Hand-polished mirror-like chassis built upon 2mm 316L stainless steel sheets that are non-corrosive, non-magnetic, and better in damping micro-vibrations via mass
Product Considerations
- The shiny chassis is a potent fingerprint attractor, and gets very hot near tubes
- The menu can't be accessed via the remote control, and doesn't cover naming inputs and dimming display
- No DC trigger ports are available to conveniently power on the entire set with other Audio Phonique products via just one button press
Comparisons (according to reviewers)
- Vs Trilogy 915R: The PRE DHT artfully combined tone, muscularity, roundness, and euphony to imaging size, illumination, top extension, quickness, and control downstairs—emerging as the more sorted wholesome product
Takeaway: The Audio Phonique PRE DHT is a luxuriously executed and brilliantly voiced preamplifier that offers both romantic sound qualities and high-performance capabilities. It is an ambitious product that can elevate the listening experience.
Video review
Our take on the brand

Our Summary
Product Strengths
- Phenomenal reproduction of instruments and vocalists in the bass, midbass, and lower mids, delivering power-range octaves with speed, definition, and impact
- Exceedingly neutral timbral balance, neither top-down nor bottom-up
- Astonishingly transparent to sources, revealing both how the music was recorded and performed
- Creates a continuous soundfield, weaving details together into near-palpable wholes within a seamless soundscape
- Limited I/O, with only two sets of RCA inputs—one mm and one mc—and a single pair of RCA outputs; there are no balanced connections
Product Considerations
- Occasional tendency to shoutiness in the upper midrange, particularly on very hard transients at very high volumes—source-dependent
- Lacks modern features like a rumble filter, alternative EQ curves, and a digital readout of loading values
- Granularity of potentiometers for resistive and capacitive loading has broad gaps between values
Comparisons (according to reviewers)
- Vs Soulution 755, the PH3.8 NEXTGEN is better in timbral neutrality, as the Soulution is a bit dark-sounding
Takeaway: The Goldmund PH3.8 NEXTGEN delivers realistic, revealing, and deeply enjoyable sound, excelling in bass reproduction and timbral neutrality. For vinyl enthusiasts, this product is a reference-grade phonostage that merits auditioning.
Video review
Our take on the brand
What else competes at this price?

The newly developed fully balanced LCR EQ circuit produces a detailed and solid soundstage. The hearing experience is comparable to listening to a master tape and makes one forget that the source is a vinyl disc. This unique circuit also brings intensity of music to the listener and transports him/her to the concert hall. It enables the listener to experience live performance on stage, rather than the traditional feeling of listening to the performance at a great distance in the audience seat of the concert hall. When played back by the correct equalization curve and phase with this circuit, stereo LPs will present us with a wonderful and amazing world of music never experienced before.
Our Summary
Product Strengths
- The Zanden 1200 Signature has a fully balanced circuit throughout, which results in more stable and better-quality performance
- Music is delivered from a deep black background of silence, resulting in a very quiet performance
- Profoundly dynamic with a scale and sense of realism, it puts the listener right in the middle of the music
- The sound is musically inviting without warming it up, insightful without sounding unnecessarily exuberant, detailed without sounding etched or bland, and dynamic without sounding unhinged
- A wide soundstage with uncommon depth and layering, as well as strong and stable images, are presented
Product Considerations
- There is no fine tuning of impedance, gain or capacitance to match different phono cartridges, only two main MC options are available
- The alternate EQ curves have relatively higher output than RIAA EQ
Comparisons (according to reviewers)
- Vs Pass Labs XP-25: The Zanden created more air and space within a deeper soundstage, was more robust with consistently finer-grained vocal and instrumental presentations, better dynamic shadings, and tighter bass
- Vs Zanden 120: The 1200S exhibited a softer hand and lighter touch with the music, providing more nuanced presentations sensitive to the dynamic and tonal shadings of instrumental and vocal performances, and it had an easier time with soundstage depth, layering, and fortissimo passages
Takeaway: The Zanden 1200 Signature is a meticulously crafted phono preamplifier that offers engaging sound, flexibility, and a refined musical experience with excellent dynamics and detail. It delivers a natural presentation of instruments and vocals creating an immersive soundstage.
Video review
Our take on the brand

Our Summary
Product Strengths
- The Gryphon Pandora is considered 'one hell of a line stage' and is highly recommended for any Gryphon amplifier
- It delivers a 'huge, huge sound' with a massive, wall-to-wall, ceiling-to-floor presentation
- It provides a lot of bottom end control, punch, and muscle, with clear string plucking and well-marked edges on a guitar
- Top notch construction
- The Pandora just sounds like music
Product Considerations
- The back feet on the Pandora are spikes, which can scratch the surface it's placed on, such as wood shelves
- The design with spikes on both chassis prevents stacking, requiring two shelves
- Requires two expensive power cords
- No polarity switching
Comparisons (according to reviewers)
- The Pandora has a larger soundstage, wrapping around the listener, while the Boulder focuses on the space between the speakers with detail and separation
- If in a position to upgrade from the Gryphon Essence line stage, the Pandora is recommended
- The Pandora clicks better with the Gryphon amplifier
Takeaway: The Gryphon Pandora is a great line stage to go with any Gryphon amplifier, delivering a huge and powerful sound. It is a worthwhile purchase for those seeking a high-quality audio experience, especially within the Gryphon ecosystem.
Video review
Our take on the brand

Our Summary
Product Strengths
- Neutral as possible while retaining all the music's delicacy, refinement, and fluidity, being revealing without becoming clinical
- Wide and deep soundstage, timbrally spot-on and very natural, well-focused, richly textured, and well-endowed in terms of transient attack and dynamic impact
- Significantly more revealing, without introducing any negative by-products such as dryness or a lack of emotional involvement
- More discerning of differences in sources and source material, enlarging the contrast between them
- A blacker background—low-level details can be heard more clearly
Product Considerations
- Calibration is mandatory after the upgrade from C1 to C1.2, as the calibration of the C1.2 is different from the one in the C1, and failure to do so will lead to degraded performance
- Without calibration, the sound can be super-crisp, tight, direct, and highly rhythmic, but also quite square and technical, and with the flow and emotional involvement on a much lower level
- Files played directly from the C1.2 have a slightly contoured character—everything is accurate, powerful, energetic, but sometimes even too accurate
- The C1 sounded fuller than other CH Precision products, and the C1.2 upgrade brings it more in line with other products
Comparisons (according to reviewers)
- Vs dCS Vivaldi 2.0: Clear and precise sound, although the dCS has some softness making it seem a bit warmer
- Vs Weiss DA502 D/A converter: A similar vision of clear and precise sound
- Vs Ayon Audio CD-35 HF Edition: Better timbral dissimilarity of individual instruments and portrayed them on a better-organized soundstage with more dimensions
- Vs ESOTERIC K-01D: Well-placed space, similar to the ESOTERIC K-01D, despite their tonal differences
Takeaway: The C1.2 is a very resolving and revealing DAC that presents music with exceptional clarity and precision, able to enhance subtle details in music. It is a great way to appreciate the details of music.
Video review
Our take on the brand
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Our Summary
Product Strengths
- Exceptional build quality, CNC machined out of solid billets of aluminum with a velvety finish
- Designed to disappear from the audio chain functionally, leaving just music behind
- Incorporates Lundahl input and output transformers for galvanic isolation
- Features a precision volume control providing optimal channel synchronisation
Product Considerations
- The degree of minimalism might be too much for some, lacking indicator lights
- 10W power output might not appeal to those who prioritize amplifier output numbers
Takeaway: The Zeiler Audio PR-01 is made for those who appreciate uncompromising sound and build quality. If the goal is to hear music as it was meant to be played, this could be the product for you.
Video review
Our take on the brand
Our Summary
Product Strengths
- Features an LDR (Light-dependent resistor) based Switchless Optical Input board, which is extremely quiet thanks to its switchless principle
- Has a separate power supply
- Features a new Aavik analogue crossover designed to either very precisely control a subwoofer or, with the integrated low pass and high pass filter—to control a 2.1 home theatre system
- Engineered enclosure offers an authentic sound that is warm, harmonious, and powerful, yet crisp and refined—highlighting every detail in the music
- Line stage features a unique inverted Virtual Ground amplifier topology that supplies maximum stability, maintaining the full signal with the lowest signal-to-noise ratio, making even the finest details of timbre and texture nuances audible on an extremely quiet soundstage
Product Considerations
- The Aavik C-580 is expensive
Takeaway: The Aavik C-580 is a versatile preamplifier for audiophiles and music lovers, with unique features that provide clarity, detail, and accuracy in music playback—creating a realistic and immersive audio experience. It offers high-end sound and aesthetics that will last for years.
Video review
Our take on the brand
Note that this is a discontinued product. You may want to visit the brand's page here to browse their newer products.
What reviewers think
Magazine reviewers and YouTubers have tried this product—so we've summarized their strongest opinions below.
Product Strengths
- Superior sound quality, more dynamic, throws a solid and expansive soundstage, and presents the music against a quieter background
- Honest and neutral sound signature, minimizing tube editorializing and offering greater musical immersion
- User-friendly and customizable touchscreen display for complete control
- Reveals musical detail and bass texture, improving upon earlier Reference preamps
- Opens up a musical world that remains out of reach for most
Product Considerations
- Significant shelf space is required due to its two-chassis design
- Careful system matching is needed, as it will reveal weaknesses in other components
- Stylistically, it is in something of an odd place, straddling the product design of Audio Research preamps of old, without the aesthetic of the latest Foundation and Reference line, and being something of an outlier
- Some time may be required to adjust to the level of detail and information it presents
Comparisons (according to reviewers)
- The Reference 10 offers improved dynamics, bass resolution, and suddenness compared to the Audio Research Reference 5 SE
- The Reference 10 sounds lighter, faster, and more resolute, especially in the bass region, compared to the Audio Research Reference Anniversary, which has a denser, sweeter character
- The Ayre KX-R Twenty sounds surprisingly like—the Audio Research Reference 10
Takeaway: The Audio Research Reference 10 is a thrilling and engrossing preamplifier that delivers exceptional sound quality and user customization, making it a valuable addition to a high-end audio system. Its ability to reveal detail and create an expansive soundstage ensures a captivating listening experience.
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