Voxativ & Pass Labs PRE-AMPS / PHONO



 Pre-amp including MC phono stage$17,500

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The Voxativ Ampeggio preamp is constructed by Voxativ chief engineer Stefan Noll. His team is also manufacturing the unit in Fulda/Germany.
Mr. Noll did develop a fast and complete noise-free circuit that is extremely dynamic and perfectly made to fit Voxativ mono blocks and all other amplifiers, even solid state. A sonic revelation with a separate power supply and RCA NOS tubes.
Inside of this preamp Voxativ is using a solid state rectification, no chokes and a complete regulation of all voltages with tubes. The musical way though this preamp is designed without any components except the output capacitors by Mundorf. Your music signal is transported by silver wires.
There is no potentiometer inside. An attenuator with motor driven infrared remote control from Switzerland does the job and switches in 24 steps between 24 high end resistors. The benefit: Extreme resolution and crystal clear music.
Also implemented: An excellent tube based MC phono stage. This was realized with 4 tubes and Lundahl MC step-up transformers. To keep the preamp completely noise free in MC position the power supply is put in an extra box. No noise. No hum. Never.

This is no preamp that is smoothing up everything. It is a very dynamic machine that loves details and brings out the most emotional musical experience.

Also: Lots of other tube amplifiers do have problems to stay noise free with 100 dB speakers. Not this one nor the matching monoblocs.


Technical Data

Frequency Response 10 – 50.000 Hz
Signal to Noise Ratio 100 dB
Distortion 0,1 %
Tubes Siemens, JJ, RCA
Input Sensitivity 100 kOhm
Input 3 x line , 1 x Phono MM/MC
Output 2 x Pre Out
Output Impedance 240 Ohms
Power consumption 150 W
Color Aluminium, black
Measure B x H x T 45 x 18 x 44 cm
Weight 20 lbs (9 kg)



Xs Series

Xs Preamp Dual Chassis Preamp – $38,000

Xs Preamp_stack_remote_raw

This large, dual-chassis preamplifier is built in true dual-mono arrangement. Each channel has its own power supply board with over 100,000uf of capacitance for unfettered transient response. Noise levels have been dropped from the already low-noise XP30. Refined circuit design and layout, new gain-stages with auto-bias and DC compensation all combine for optimal performance. But it all comes down to sound; once you listen to the Xs preamplifier, there is no going back.

Technical specifications  

 Overall Gain
-89.5 dB to +9.5 dB
Volume Steps 99
Remote- Yes
Inputs 6
Outputs 4
Frequency Response  -3dB @ 2 Hz and 60 kHz
Input Impedance 42k balanced
Output Impedance 120 Ohm bal, 120 Ohm SE
CMRR -65 dB, 1 kHz
Cross-talk -100 dB, 1kHz Ref 1V
Signal to Noise Ratio < -110 dB, Ref 5V
Power Consumption (W) 55
Number of Chassis 2
Dimensions, Each Chassis 19”W x 14”D x 6.25”H
Weight (LBS) 80
Shipping Box Dim 24 x 19 x 23
Shipping Weight (LBS) 90

Awards and Reviews  

Editors’ Choice Award 2017

The Absolute Sound

“For me, the Xs series has drawn a line in the sand and has redefined the ‘state of the art’.”

Positive Feedback  

“Have a sound that is almost beyond description in words.”

Home Theater HiFi  

Circuitus Maximus Award 2017


Top o’ the line Brutus Awards 2017


Xs Phono Dual Chassis Phono – $45,000

The Xs Phono preamplifier represents an all-out assault on the state-of-art in Vinyl and the most intensive and difficult design effort made at Pass Laboratories. The final product of this massive effort extracts the utmost performance from a simple topology  and operates with the extremely small and delicate signals coming from today’s wide variety of phono cartridges. The result is music that emerges from a quieter background and blooms into a richer, more precise soundstage.

Technical specifications  

 Gain 56, 66, 76dB
RIAA response plus/minus .1 dB 20-20 KHz
RIAA response plus/minus .1 dB 20-20 KHz
Distortion < .005 % THD @ 1mV MC input
Maximum Output 38 volts rms balanced @ .1% THD
Output Impedance 150 SE / 150 Balanced
Input Impedance 30 ohm – 47K ohm any input
Power consumption (Watts) 55
Number of chassis 2
Dimensions, each chassis 19”W x 14”D x 6.25”H
Weight (Lbs) 80
Ship Box Dim 24 x 19 x 23
Shipping Weight 90

Xp Series

Xp-10 Single Chassis Remote – $5,250

Designed with considerable technical improvements over past preamplifiers, the XP-10 showers the listener with a more dynamic sound, cleaner and more accurately delineated bass lines and a greatly refined spatial envelope. Though the current entry-level line-stage preamplifier, this descendant of the highly acclaimed and successful Pass Laboratory’s X series preamplifiers sounds and measures significantly better than its predecessors.

Xp-30 Three Chassis Remote – $16,500

The XP-30 is a three-piece modular preamplifier consisting of one control/power supply chassis and two additional gain chassis each containing analog signals of a single channel. The XP-30 generates less noise, crosstalk and distortion while delivering greater dynamic range, gain, output voltage and output current. But it is the sound, not the technical excellence, that truly makes this a breakthrough instrument.

Awards and Reviews  

Editors’ Choice Award 2017

The Absolute Sound

Recommended Components 2015


“Ignite the imagination and accelerate your heart rate to thousands audiophiles worldwide”


“Super quiet, super transparent and a sense of tone and purity to die for”

Positive Feedback  

“the Pass Laboratories XP-30 is an incredible linestage preamplifier and, in my experience, easily one of the best of its kind.”

Parttime Audiophile  

“Parttime audiophile Editors Choice”

Parttime Audiophile  

Technical specifications  

 Overall Gain -90 dB to +10 dB
Volume Steps 99
Remote Yes
Inputs 6
Outputs 4
Frequency Response -3dB @ 2 Hz and 60 kHz
Input Impedance 42k balanced
Output Impedance 120 Ohm bal, 120 Ohm SE
CMRR -60 dB, 1 kHz
Cross-talk -100 dB, 1kHz Ref 1V
Signal to Noise Ratio < -110 dB, Ref 5V
Power Consumption (W) 45
Number of Chassis 3
Dimensions, Each Chassis 17”W x 12”D x 4”H
Weight (LBS) 57.5
Shipping Box Dim 23 x 18 x 27
Shipping Weight (LBS) 73

Xp-15 Phono Preamp – $3,800


A single-chassis phonostage preamplifier, the XP-15 represents a sophistication and maturation of both thinking and component evolution. Each new design of that evolution has brought a steady improvement in measured metrics and flexibility — greater accuracy in the RIAA curve, greater range of gain from 46db to 76db…and the list goes on. But more importantly the evolution has contributed to a more robust sonic image presented with improved resolution and additional sonic ease.


Xp-25 Two Chassis Phono Preamp – $10,600

The twin chassis XP-25 phonostage preamplifier greatly improves upon the already exceptional performance of the XP-15. In addition to a separate and isolated power supply chassis, the XP-25 boasts adjustable gain, two separate inputs, a low cut filter, mute feature, resistive and capacitive loading all on the front panel for easy access. With the XP-25 you will discover a whole new dimension of dynamics, inner detail and spectral richness.

Awards and Reviews  

“If you like an inviting balance of warmth and detail along with superior dynamic punch and transparency, the XP-25 is a rock solid high reward investment and just might be your last phono preamp purchase! ”

Positive Feedback  

“On the cut “Anyone Who Had A Heart,” her voice is smoother and more seductive than through some tubed units I have heard.”

Tone Audio  

“All the adjustments are right upfront and easy to read, making fine tuning a snap”

Jeff Dorgay – Tone Audio  

Technical specifications  

Gain 53 dB (47 Single-ended)
Gain 66 dB (60 SE)
Weight (Lbs) 40
Ship Box Dim 23 x 18 x 18
Shipping Weight 50

Xp-25C Control Unit only Phono No PS – $7,600

HPA-1  Headphone Amplifier – $3,500



Class A

Announcing the new Headphone Amp from Pass Labs!

Like the XP preamplifiers, the HPA-1 is the result of great attention to detail.

Starting at the power cord, the AC line is first filtered for high frequency noise and then isolated by a special toroidal transformer shielded by mu-metal for lower magnetic noise and shielded for electrostatic noise by a separate Faraday shield, grounded to analog ground. This is followed by fast/soft recovery rectifiers, generous CRC passive filtering and sophisticated discreet DC regulators and then more passive RC filters.

Works with headphones
with impedances of 15 ohms to 600 ohms

Low feedback wide bandwidth discreet design.

Class A
direct coupled Mosfet output stage

Custom low noise Torodial power transformer
with a Farady shield

Discreet regulated power supply for audio circuits.

Awards and Reviews  

“To put it bluntly, Pass Labs HPA-1 is an exceptional, very addictive headamp/preamp combo every aficionado should at least audition once an opportunity strikes.”

HiFi Knights  

” If I did not know that the HPA-1 was transistor-based, I would’ve been fooled: the HPA-1 had the natural warmth and slight fullness that mimic tubes.” ” In my view, headphone listening is about intimacy, and the HPA-1 is nearly perfect in this regard.”


“As far as headphones go, the HPA-1 is a brilliant amp which deserves every bit of praise I’ve thus far heaped on it.”

Part-Time Audiophile  

Headphone Amplifier of the Year – 2016

The Absolute Sound

Best Headphone Amplifier – Best of Awards – 2016


“One Of The Best HPAs In The Audiophile World!”

Everything Audio Network  

“The HPA-1 had an effortless quality that made recorded music sound more like the real thing.”


“Pass Labs, one of the most prestigious names in audio, has launched a terrific headphone amplifier”

Home Theater HiFi  

“in bass clarity and authority and in midrange transparency, the Pass Labs HPA-1 is without peer”


“The Pass HPA-1 is on the top tier of the world’s finest headphone amplifiers”

Tone Audio  

“This thing sounds so damn good twenty minutes out of the box”

Tone Audio  

“An amplifier that drives headphones to exceptional performance”


“The best I’ve heard from a headphone amp anywhere near the HPA-1’s price.”

Enjoy The Music  

“the Pass Labs HPA-1 is a bona fide muscle amp in the guise of an equal-opportunity preamp with headfi function.”


“Dynamics and authority are two of the best qualities in all listening sessions with the HPA-1, regardless of the headphone. With a great current delivery it also drives any planarmagnetic headphone, with an absolute control.”


Technical specifications  

Gain (dB) 8 dB
Power Consumption (W) 23
Output Power into 20 ohms 3500 mW
Output Power into 300 ohms 200 mW
Frequency Response 10hz -100k -1 dB
THD + Noise < 0.005 at 1V out
Input Impedance 50K Ohm
Output Impedance < 2 ohms


EQ Products

XVR1 2-way electronic crossover – $5,250

XVR1 3-way electronic crossover – $8,400

XVR1 Control Unit only – no PS – $3,150


B1 Preamp$900

B4 Crossover$1,500

B5 Crossover$1,500



Mike Phalan | Audio Expert 


(808) 640-8947

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